HSL(240, 37%, 18%)

Blue — Blue color

Adjust Color

Color Information

Color Name

Blue

Color Family

Blue

Warm / Cool

🔵 Cool

Temperature

9000K

CSS Class

bg-[hsl(240,37%,18%)]

Color Conversions

Format Value CSS Usage
HSL hsl(240, 37%, 18%) color: hsl(240, 37%, 18%)
HEX #1D1D3F color: #1D1D3F
RGB rgb(29, 29, 63) color: rgb(29, 29, 63)
CMYK cmyk(54%, 54%, 0%, 75%) —
HSV hsv(240, 54%, 25%) —
HWB hwb(240 12% 75%) color: hwb(240 12% 75%)
OKLCH oklch(0.2509 0.063 280.86) color: oklch(0.2509 0.063 280.86)
Lab lab(12.6 11.05 -21.8) color: lab(12.6 11.05 -21.8)
LCH lch(12.6 24.44 296.88) color: lch(12.6 24.44 296.88)

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 16.16:1
vs Black 1.3:1

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)

#1D1D37 — rgb(29, 29, 55)

Deuteranopia (Green-blind)

#1D1D35 — rgb(29, 29, 53)

Tritanopia (Blue-blind)

#1D302F — rgb(29, 48, 47)

Tints & Shades

Tints (Lighter →)

← Shades (Darker)

Saturation (0% → 100%)

CSS Code Snippets

background

background-color: hsl(240, 37%, 18%);

text

color: hsl(240, 37%, 18%);

border

border: 2px solid hsl(240, 37%, 18%);

gradient light

background: linear-gradient(to right, hsl(240, 37%, 38%), hsl(240, 37%, 18%));

gradient dark

background: linear-gradient(to right, hsl(240, 37%, 18%), hsl(240, 37%, 0%))

hex

background-color: #1D1D3F;

tailwind

bg-[hsl(240,37%,18%)]

box shadow

box-shadow: 0 4px 6px -1px hsl(240, 37%, 18%, 0.4);

css variable

--color-primary: hsl(240, 37%, 18%);

Related Colors

#262636

240,17,18

#141448

240,57,18

#000000

240,37,0

#3D3D85

240,37,38

#1D253F

225,37,18

#1D233F

230,37,18

#231D3F

250,37,18

#251D3F

255,37,18

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(240, 37%, 18%)?

HEX: #1D1D3F | RGB: rgb(29, 29, 63) | CMYK: 54%, 54%, 0%, 75% | HSV: 240°, 54%, 25%. Copy any format from the conversion table above.

What colors go well with #1D1D3F?

The complementary color is HSL(60, 37%, 18%). For a triadic harmony, use hues 240°, 0°, and 120°. For analogous combinations, try hues 210° and 270°. See the Color Harmony section above for complete palettes with previews.

How do I use HSL(240, 37%, 18%) in CSS?

As HSL: color: hsl(240, 37%, 18%); — As HEX: color: #1D1D3F; — As RGB: color: rgb(29, 29, 63); — Tailwind CSS: bg-[hsl(240,37%,18%)] — CSS variable: --color-primary: hsl(240, 37%, 18%);