#182D81#182D81

#182D81 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.1% C 0.143 H 267.2°. Best body text is #FFFFFF at 12.13:1 contrast (WCAG AA passes).

Color values

HEX	#182D81
RGB	rgb(24, 45, 129)
HSL	hsl(228, 69%, 30%)
HSV	hsv(228, 81%, 51%)
CMYK	cmyk(81.4%, 65.1%, 0%, 49.4%)
CIE-LAB	lab(22.50, 24.80, -49.53)
CIE-LCH	lch(22.50, 55.39, 296.59°)
OKLab	oklab(34.14% -0.0071 -0.1433)
OKLCH	oklch(34.14% 0.143 267.2)
XYZ	xyz(5.2761, 3.6553, 21.1921)
Luminance	0.0366 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182D81 #816C18

analogous

#186181 #182D81 #381881

triadic

#182D81 #81182D #2D8118

tetradic

#182D81 #811861 #816C18 #188138

square

#182D81 #811861 #816C18 #188138

split-complementary

#182D81 #813818 #618118

monochromatic

#05091A #0E1B4D #182D81 #223FB5 #3959DA

Accessibility & contrast

On white

12.13

#182D81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#182D81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182D81

12.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182D81	#FFFFFF	#000000	##FFFFFF
##182D81	1.00	12.13	1.73	12.13
#FFFFFF	12.13	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B84

Deuteranopia (green-blind)

#00317F

Tritanopia (blue-blind)

#004352

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #182d81;
/* rgb */ color: rgb(24, 45, 129);
/* oklch */ color: oklch(34.1% 0.143 267.2);

Tailwind

colors: {
  custom: {
    50: '#6865a6',
    500: '#182d81',
    950: '#000000',
  },
}

SCSS

$custom: #182d81;
$custom-light: #6865a6;
$custom-dark: #000000;

JSON

{
  "hex": "#182d81",
  "rgb": {
    "r": 24,
    "g": 45,
    "b": 129
  },
  "hsl": {
    "h": 228,
    "s": 68.627,
    "l": 30
  },
  "oklch": {
    "l": 0.34145,
    "c": 0.14348,
    "h": 267.2
  },
  "luminance": 0.03656
}

Semantic roles & 50–950 ramp

primary

#182D81

secondary

#B59E40

accent

#C83CEB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #182D81

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

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