#180F5E#180F5E

#180F5E is a dark, vivid blue. Relative luminance 0.013; OKLCH L 25.1% C 0.130 H 276.6°. Best body text is #FFFFFF at 16.55:1 contrast (WCAG AA passes).

Color values

HEX	#180F5E
RGB	rgb(24, 15, 94)
HSL	hsl(247, 72%, 21%)
HSV	hsv(247, 84%, 37%)
CMYK	cmyk(74.5%, 84%, 0%, 63.1%)
CIE-LAB	lab(11.58, 31.15, -44.78)
CIE-LCH	lch(11.58, 54.54, 304.82°)
OKLab	oklab(25.15% 0.015 -0.1294)
OKLCH	oklch(25.15% 0.13 276.6)
XYZ	xyz(2.5672, 1.3438, 10.7116)
Luminance	0.0134 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180F5E #555E0F

analogous

#0F2E5E #180F5E #400F5E

triadic

#180F5E #5E180F #0F5E18

tetradic

#180F5E #5E0F2E #555E0F #0F5E40

square

#180F5E #5E0F2E #555E0F #0F5E40

split-complementary

#180F5E #5E400F #2E5E0F

monochromatic

#07041A #0B0729 #180F5E #251793 #3320C8

Accessibility & contrast

On white

16.55

#180F5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#180F5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180F5E

16.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180F5E	#FFFFFF	#000000	##FFFFFF
##180F5E	1.00	16.55	1.27	16.55
#FFFFFF	16.55	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002260

Deuteranopia (green-blind)

#001B5D

Tritanopia (blue-blind)

#002736

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #180f5e;
/* rgb */ color: rgb(24, 15, 94);
/* oklch */ color: oklch(25.1% 0.130 276.6);

Tailwind

colors: {
  custom: {
    50: '#624f8d',
    500: '#180f5e',
    950: '#000000',
  },
}

SCSS

$custom: #180f5e;
$custom-light: #624f8d;
$custom-dark: #000000;

JSON

{
  "hex": "#180f5e",
  "rgb": {
    "r": 24,
    "g": 15,
    "b": 94
  },
  "hsl": {
    "h": 246.835,
    "s": 72.477,
    "l": 21.373
  },
  "oklch": {
    "l": 0.25149,
    "c": 0.13028,
    "h": 276.6
  },
  "luminance": 0.01344
}

Semantic roles & 50–950 ramp

primary

#180F5E

secondary

#8C9731

accent

#EF39DA

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #180F5E

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →