HSL(231, 65%, 21%)

Blue — Blue color

Adjust Color

Color Information

Color Name

Blue

Color Family

Blue

Warm / Cool

🔵 Cool

Temperature

9000K

CSS Class

bg-[hsl(231,65%,21%)]

Color Conversions

Format Value CSS Usage
HSL hsl(231, 65%, 21%) color: hsl(231, 65%, 21%)
HEX #131D58 color: #131D58
RGB rgb(19, 29, 88) color: rgb(19, 29, 88)
CMYK cmyk(78%, 67%, 0%, 65%) —
HSV hsv(231, 78%, 35%) —
HWB hwb(231 8% 65%) color: hwb(231 8% 65%)
OKLCH oklch(0.2657 0.1064 270.01) color: oklch(0.2657 0.1064 270.01)
Lab lab(13.95 18.97 -36.85) color: lab(13.95 18.97 -36.85)
LCH lch(13.95 41.45 297.24) color: lch(13.95 41.45 297.24)

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 15.62:1
vs Black 1.34:1

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)

#17174A — rgb(23, 23, 74)

Deuteranopia (Green-blind)

#171646 — rgb(23, 22, 70)

Tritanopia (Blue-blind)

#143E3C — rgb(20, 62, 60)

Tints & Shades

Tints (Lighter →)

← Shades (Darker)

Saturation (0% → 100%)

CSS Code Snippets

background

background-color: hsl(231, 65%, 21%);

text

color: hsl(231, 65%, 21%);

border

border: 2px solid hsl(231, 65%, 21%);

gradient light

background: linear-gradient(to right, hsl(231, 65%, 41%), hsl(231, 65%, 21%));

gradient dark

background: linear-gradient(to right, hsl(231, 65%, 21%), hsl(231, 65%, 1%))

hex

background-color: #131D58;

tailwind

bg-[hsl(231,65%,21%)]

box shadow

box-shadow: 0 4px 6px -1px hsl(231, 65%, 21%, 0.4);

css variable

--color-primary: hsl(231, 65%, 21%);

Related Colors

#1D254E

231,45,21

#081663

231,85,21

#010104

231,65,1

#2539AD

231,65,41

#132F58

216,65,21

#132958

221,65,21

#141358

241,65,21

#1A1358

246,65,21

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, 65%, 21%)?

HEX: #131D58 | RGB: rgb(19, 29, 88) | CMYK: 78%, 67%, 0%, 65% | HSV: 231°, 78%, 35%. Copy any format from the conversion table above.

What colors go well with #131D58?

The complementary color is HSL(51, 65%, 21%). 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, 65%, 21%) in CSS?

As HSL: color: hsl(231, 65%, 21%); — As HEX: color: #131D58; — As RGB: color: rgb(19, 29, 88); — Tailwind CSS: bg-[hsl(231,65%,21%)] — CSS variable: --color-primary: hsl(231, 65%, 21%);