#181C74#181C74

#181C74 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.7% C 0.146 H 271.4°. Best body text is #FFFFFF at 14.41:1 contrast (WCAG AA passes).

Color values

HEX	#181C74
RGB	rgb(24, 28, 116)
HSL	hsl(237, 66%, 27%)
HSV	hsv(237, 79%, 45%)
CMYK	cmyk(79.3%, 75.9%, 0%, 54.5%)
CIE-LAB	lab(16.92, 31.20, -50.41)
CIE-LCH	lch(16.92, 59.29, 301.76°)
OKLab	oklab(29.69% 0.0035 -0.1459)
OKLCH	oklch(29.69% 0.146 271.4)
XYZ	xyz(3.9433, 2.2852, 16.7529)
Luminance	0.0229 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C74 #747018

analogous

#184A74 #181C74 #421874

triadic

#181C74 #74181C #1C7418

tetradic

#181C74 #74184A #747018 #187442

square

#181C74 #74184A #747018 #187442

split-complementary

#181C74 #744218 #4A7418

monochromatic

#050619 #0E1041 #181C74 #2228A7 #3239D5

Accessibility & contrast

On white

14.41

#181C74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#181C74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C74

14.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C74	#FFFFFF	#000000	##FFFFFF
##181C74	1.00	14.41	1.46	14.41
#FFFFFF	14.41	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E77

Deuteranopia (green-blind)

#002572

Tritanopia (blue-blind)

#003546

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #181c74;
/* rgb */ color: rgb(24, 28, 116);
/* oklch */ color: oklch(29.7% 0.146 271.4);

Tailwind

colors: {
  custom: {
    50: '#66599d',
    500: '#181c74',
    950: '#000000',
  },
}

SCSS

$custom: #181c74;
$custom-light: #66599d;
$custom-dark: #000000;

JSON

{
  "hex": "#181c74",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 116
  },
  "hsl": {
    "h": 237.391,
    "s": 65.714,
    "l": 27.451
  },
  "oklch": {
    "l": 0.29685,
    "c": 0.14599,
    "h": 271.4
  },
  "luminance": 0.02286
}

Semantic roles & 50–950 ramp

primary

#181C74

secondary

#A9A53F

accent

#E13FE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #181C74

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

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