#181C75#181C75

#181C75 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.8% C 0.147 H 271.3°. Best body text is #FFFFFF at 14.37:1 contrast (WCAG AA passes).

Color values

HEX	#181C75
RGB	rgb(24, 28, 117)
HSL	hsl(237, 66%, 28%)
HSV	hsv(237, 79%, 46%)
CMYK	cmyk(79.5%, 76.1%, 0%, 54.1%)
CIE-LAB	lab(17.03, 31.57, -50.87)
CIE-LCH	lch(17.03, 59.88, 301.82°)
OKLab	oklab(29.8% 0.0033 -0.1473)
OKLCH	oklch(29.8% 0.147 271.3)
XYZ	xyz(4.0017, 2.3086, 17.0609)
Luminance	0.0231 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C75 #757118

analogous

#184B75 #181C75 #421875

triadic

#181C75 #75181C #1C7518

tetradic

#181C75 #75184B #757118 #187542

square

#181C75 #75184B #757118 #187542

split-complementary

#181C75 #754218 #4B7518

monochromatic

#050619 #0E1042 #181C75 #2228A8 #3239D5

Accessibility & contrast

On white

14.37

#181C75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#181C75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C75

14.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C75	#FFFFFF	#000000	##FFFFFF
##181C75	1.00	14.37	1.46	14.37
#FFFFFF	14.37	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E78

Deuteranopia (green-blind)

#002573

Tritanopia (blue-blind)

#003647

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #181c75;
/* rgb */ color: rgb(24, 28, 117);
/* oklch */ color: oklch(29.8% 0.147 271.3);

Tailwind

colors: {
  custom: {
    50: '#67599e',
    500: '#181c75',
    950: '#000000',
  },
}

SCSS

$custom: #181c75;
$custom-light: #67599e;
$custom-dark: #000000;

JSON

{
  "hex": "#181c75",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 117
  },
  "hsl": {
    "h": 237.419,
    "s": 65.957,
    "l": 27.647
  },
  "oklch": {
    "l": 0.29798,
    "c": 0.14733,
    "h": 271.3
  },
  "luminance": 0.02309
}

Semantic roles & 50–950 ramp

primary

#181C75

secondary

#AAA63F

accent

#E23FE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #181C75

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

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