#182F81#182F81

#182F81 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.5% C 0.141 H 266.6°. Best body text is #FFFFFF at 11.92:1 contrast (WCAG AA passes).

Color values

HEX	#182F81
RGB	rgb(24, 47, 129)
HSL	hsl(227, 69%, 30%)
HSV	hsv(227, 81%, 51%)
CMYK	cmyk(81.4%, 63.6%, 0%, 49.4%)
CIE-LAB	lab(23.04, 23.40, -48.64)
CIE-LCH	lch(23.04, 53.98, 295.69°)
OKLab	oklab(34.55% -0.0084 -0.1407)
OKLCH	oklch(34.55% 0.141 266.6)
XYZ	xyz(5.3543, 3.8116, 21.2181)
Luminance	0.0381 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182F81 #816A18

analogous

#186481 #182F81 #351881

triadic

#182F81 #81182F #2F8118

tetradic

#182F81 #811864 #816A18 #188135

square

#182F81 #811864 #816A18 #188135

split-complementary

#182F81 #813518 #648118

monochromatic

#05091A #0E1C4D #182F81 #2242B5 #395CDA

Accessibility & contrast

On white

11.92

#182F81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#182F81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182F81

11.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182F81	#FFFFFF	#000000	##FFFFFF
##182F81	1.00	11.92	1.76	11.92
#FFFFFF	11.92	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C84

Deuteranopia (green-blind)

#00327F

Tritanopia (blue-blind)

#004453

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #182f81;
/* rgb */ color: rgb(24, 47, 129);
/* oklch */ color: oklch(34.5% 0.141 266.6);

Tailwind

colors: {
  custom: {
    50: '#6867a6',
    500: '#182f81',
    950: '#000000',
  },
}

SCSS

$custom: #182f81;
$custom-light: #6867a6;
$custom-dark: #000000;

JSON

{
  "hex": "#182f81",
  "rgb": {
    "r": 24,
    "g": 47,
    "b": 129
  },
  "hsl": {
    "h": 226.857,
    "s": 68.627,
    "l": 30
  },
  "oklch": {
    "l": 0.34546,
    "c": 0.14093,
    "h": 266.6
  },
  "luminance": 0.03812
}

Semantic roles & 50–950 ramp

primary

#182F81

secondary

#B59B40

accent

#C53CEB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #182F81

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

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