#181B74#181B74

#181B74 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.5% C 0.147 H 271.6°. Best body text is #FFFFFF at 14.50:1 contrast (WCAG AA passes).

Color values

HEX	#181B74
RGB	rgb(24, 27, 116)
HSL	hsl(238, 66%, 27%)
HSV	hsv(238, 79%, 45%)
CMYK	cmyk(79.3%, 76.7%, 0%, 54.5%)
CIE-LAB	lab(16.69, 31.83, -50.79)
CIE-LCH	lch(16.69, 59.94, 302.08°)
OKLab	oklab(29.52% 0.004 -0.147)
OKLCH	oklch(29.52% 0.147 271.6)
XYZ	xyz(3.9199, 2.2386, 16.7451)
Luminance	0.0224 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B74 #747118

analogous

#184974 #181B74 #431874

triadic

#181B74 #74181B #1B7418

tetradic

#181B74 #741849 #747118 #187443

square

#181B74 #741849 #747118 #187443

split-complementary

#181B74 #744318 #497418

monochromatic

#050619 #0E0F41 #181B74 #2227A7 #3237D5

Accessibility & contrast

On white

14.50

#181B74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#181B74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B74

14.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B74	#FFFFFF	#000000	##FFFFFF
##181B74	1.00	14.50	1.45	14.50
#FFFFFF	14.50	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E77

Deuteranopia (green-blind)

#002572

Tritanopia (blue-blind)

#003546

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #181b74;
/* rgb */ color: rgb(24, 27, 116);
/* oklch */ color: oklch(29.5% 0.147 271.6);

Tailwind

colors: {
  custom: {
    50: '#66589d',
    500: '#181b74',
    950: '#000000',
  },
}

SCSS

$custom: #181b74;
$custom-light: #66589d;
$custom-dark: #000000;

JSON

{
  "hex": "#181b74",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 116
  },
  "hsl": {
    "h": 238.043,
    "s": 65.714,
    "l": 27.451
  },
  "oklch": {
    "l": 0.29524,
    "c": 0.14707,
    "h": 271.6
  },
  "luminance": 0.02239
}

Semantic roles & 50–950 ramp

primary

#181B74

secondary

#A9A63F

accent

#E33FE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #181B74

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

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