#181B80#181B80

#181B80 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.9% C 0.163 H 270.6°. Best body text is #FFFFFF at 13.93:1 contrast (WCAG AA passes).

Color values

HEX	#181B80
RGB	rgb(24, 27, 128)
HSL	hsl(238, 68%, 30%)
HSV	hsv(238, 81%, 50%)
CMYK	cmyk(81.3%, 78.9%, 0%, 49.8%)
CIE-LAB	lab(18.08, 36.15, -56.17)
CIE-LCH	lch(18.08, 66.80, 302.76°)
OKLab	oklab(30.92% 0.0018 -0.1627)
OKLCH	oklch(30.92% 0.163 270.6)
XYZ	xyz(4.6636, 2.5360, 20.6616)
Luminance	0.0254 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B80 #807D18

analogous

#184F80 #181B80 #491880

triadic

#181B80 #80181B #1B8018

tetradic

#181B80 #80184F #807D18 #188049

square

#181B80 #80184F #807D18 #188049

split-complementary

#181B80 #804918 #4F8018

monochromatic

#05051A #0E104C #181B80 #2226B4 #393DDA

Accessibility & contrast

On white

13.93

#181B80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#181B80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B80

13.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B80	#FFFFFF	#000000	##FFFFFF
##181B80	1.00	13.93	1.51	13.93
#FFFFFF	13.93	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003183

Deuteranopia (green-blind)

#00277E

Tritanopia (blue-blind)

#00394C

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #181b80;
/* rgb */ color: rgb(24, 27, 128);
/* oklch */ color: oklch(30.9% 0.163 270.6);

Tailwind

colors: {
  custom: {
    50: '#6a59a6',
    500: '#181b80',
    950: '#000000',
  },
}

SCSS

$custom: #181b80;
$custom-light: #6a59a6;
$custom-dark: #000000;

JSON

{
  "hex": "#181b80",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 128
  },
  "hsl": {
    "h": 238.269,
    "s": 68.421,
    "l": 29.804
  },
  "oklch": {
    "l": 0.30918,
    "c": 0.16267,
    "h": 270.6
  },
  "luminance": 0.02537
}

Semantic roles & 50–950 ramp

primary

#181B80

secondary

#B4B140

accent

#E63DEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #181B80

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

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