HSL(231, 29%, 15%)

Blue — Blue color

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Color Information

Color Name

Blue

Color Family

Blue

Warm / Cool

🔵 Cool

Temperature

9000K

CSS Class

bg-[hsl(231,29%,15%)]

Color Conversions

Format Value CSS Usage
HSL hsl(231, 29%, 15%) color: hsl(231, 29%, 15%)
HEX #1B1E31 color: #1B1E31
RGB rgb(27, 30, 49) color: rgb(27, 30, 49)
CMYK cmyk(45%, 39%, 0%, 81%) —
HSV hsv(232, 45%, 19%) —
HWB hwb(232 10% 81%) color: hwb(232 10% 81%)
OKLCH oklch(0.2417 0.0366 276.43) color: oklch(0.2417 0.0366 276.43)
Lab lab(11.85 4.56 -13.03) color: lab(11.85 4.56 -13.03)
LCH lch(11.85 13.8 289.29) color: lch(11.85 13.8 289.29)

Color Theory

Complementary

Triadic

Analogous

Tetradic (Square)

Split-Complementary

Accessibility (WCAG)

White text on color

Black text on color

Color on white bg

Colored text

Contrast Ratios

vs White 16.45:1
vs Black 1.28:1

AA Normal (4.5:1)

on White: PASS ✓ on Black: FAIL ✗

AA Large (3:1)

on White: PASS ✓ on Black: FAIL ✗

AAA Normal (7:1)

on White: PASS ✓

Best text on this color: white

Color Blindness Simulation

Protanopia (Red-blind)

#1C1C2C — rgb(28, 28, 44)

Deuteranopia (Green-blind)

#1C1C2B — rgb(28, 28, 43)

Tritanopia (Blue-blind)

#1B2928 — rgb(27, 41, 40)

Tints & Shades

Tints (Lighter →)

← Shades (Darker)

Saturation (0% → 100%)

CSS Code Snippets

background

background-color: hsl(231, 29%, 15%);

text

color: hsl(231, 29%, 15%);

border

border: 2px solid hsl(231, 29%, 15%);

gradient light

background: linear-gradient(to right, hsl(231, 29%, 35%), hsl(231, 29%, 15%));

gradient dark

background: linear-gradient(to right, hsl(231, 29%, 15%), hsl(231, 29%, 0%))

hex

background-color: #1B1E31;

tailwind

bg-[hsl(231,29%,15%)]

box shadow

box-shadow: 0 4px 6px -1px hsl(231, 29%, 15%, 0.4);

css variable

--color-primary: hsl(231, 29%, 15%);

Related Colors

#23242A

231,9,15

#141939

231,49,15

#000000

231,29,0

#3F4773

231,29,35

#1B2431

216,29,15

#1B2231

221,29,15

#1C1B31

241,29,15

#1D1B31

246,29,15

Use Cases for Blue

Corporate branding Trust signals Tech products Social media Primary buttons

Frequently Asked Questions

What are all the color codes for HSL(231, 29%, 15%)?

HEX: #1B1E31 | RGB: rgb(27, 30, 49) | CMYK: 45%, 39%, 0%, 81% | HSV: 232°, 45%, 19%. Copy any format from the conversion table above.

What colors go well with #1B1E31?

The complementary color is HSL(51, 29%, 15%). For a triadic harmony, use hues 231°, 351°, and 111°. For analogous combinations, try hues 201° and 261°. See the Color Harmony section above for complete palettes with previews.

How do I use HSL(231, 29%, 15%) in CSS?

As HSL: color: hsl(231, 29%, 15%); — As HEX: color: #1B1E31; — As RGB: color: rgb(27, 30, 49); — Tailwind CSS: bg-[hsl(231,29%,15%)] — CSS variable: --color-primary: hsl(231, 29%, 15%);