#18337C#18337C

#18337C is a dark, vivid blue. Relative luminance 0.040; OKLCH L 34.9% C 0.129 H 265.0°. Best body text is #FFFFFF at 11.64:1 contrast (WCAG AA passes).

Color values

HEX	#18337C
RGB	rgb(24, 51, 124)
HSL	hsl(224, 68%, 29%)
HSV	hsv(224, 81%, 49%)
CMYK	cmyk(80.6%, 58.9%, 0%, 51.4%)
CIE-LAB	lab(23.73, 18.55, -44.37)
CIE-LCH	lch(23.73, 48.09, 292.69°)
OKLab	oklab(34.92% -0.0113 -0.1281)
OKLCH	oklch(34.92% 0.129 265)
XYZ	xyz(5.1973, 4.0165, 19.5662)
Luminance	0.0402 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18337C #7C6118

analogous

#18657C #18337C #2F187C

triadic

#18337C #7C1833 #337C18

tetradic

#18337C #7C1865 #7C6118 #187C2F

square

#18337C #7C1865 #7C6118 #187C2F

split-complementary

#18337C #7C2F18 #657C18

monochromatic

#050B1A #0E1E49 #18337C #2248AF #3662D8

Accessibility & contrast

On white

11.64

#18337C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#18337C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18337C

11.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18337C	#FFFFFF	#000000	##FFFFFF
##18337C	1.00	11.64	1.80	11.64
#FFFFFF	11.64	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7E

Deuteranopia (green-blind)

#00347B

Tritanopia (blue-blind)

#004552

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #18337c;
/* rgb */ color: rgb(24, 51, 124);
/* oklch */ color: oklch(34.9% 0.129 265.0);

Tailwind

colors: {
  custom: {
    50: '#666aa3',
    500: '#18337c',
    950: '#000000',
  },
}

SCSS

$custom: #18337c;
$custom-light: #666aa3;
$custom-dark: #000000;

JSON

{
  "hex": "#18337c",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 124
  },
  "hsl": {
    "h": 223.8,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.34924,
    "c": 0.12857,
    "h": 265
  },
  "luminance": 0.04017
}

Semantic roles & 50–950 ramp

primary

#18337C

secondary

#B1923F

accent

#BC3DEA

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #18337C

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

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