#18288F#18288F

#18288F is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.7% C 0.168 H 268.1°. Best body text is #FFFFFF at 12.08:1 contrast (WCAG AA passes).

Color values

HEX	#18288F
RGB	rgb(24, 40, 143)
HSL	hsl(232, 71%, 33%)
HSV	hsv(232, 83%, 56%)
CMYK	cmyk(83.2%, 72%, 0%, 43.9%)
CIE-LAB	lab(22.63, 33.57, -58.06)
CIE-LCH	lch(22.63, 67.07, 300.04°)
OKLab	oklab(34.67% -0.0054 -0.1682)
OKLCH	oklch(34.67% 0.168 268.1)
XYZ	xyz(6.0917, 3.6942, 26.3733)
Luminance	0.0369 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18288F #8F7F18

analogous

#18638F #18288F #44188F

triadic

#18288F #8F1828 #288F18

tetradic

#18288F #8F1863 #8F7F18 #188F44

square

#18288F #8F1863 #8F7F18 #188F44

split-complementary

#18288F #8F4418 #638F18

monochromatic

#060B26 #0F195B #18288F #2137C3 #4257DF

Accessibility & contrast

On white

12.08

#18288F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#18288F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18288F

12.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18288F	#FFFFFF	#000000	##FFFFFF
##18288F	1.00	12.08	1.74	12.08
#FFFFFF	12.08	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C92

Deuteranopia (green-blind)

#00308D

Tritanopia (blue-blind)

#004558

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #18288f;
/* rgb */ color: rgb(24, 40, 143);
/* oklch */ color: oklch(34.7% 0.168 268.1);

Tailwind

colors: {
  custom: {
    50: '#6d62b1',
    500: '#18288f',
    950: '#000000',
  },
}

SCSS

$custom: #18288f;
$custom-light: #6d62b1;
$custom-dark: #000000;

JSON

{
  "hex": "#18288f",
  "rgb": {
    "r": 24,
    "g": 40,
    "b": 143
  },
  "hsl": {
    "h": 231.933,
    "s": 71.257,
    "l": 32.745
  },
  "oklch": {
    "l": 0.34667,
    "c": 0.16833,
    "h": 268.1
  },
  "luminance": 0.03695
}

Semantic roles & 50–950 ramp

primary

#18288F

secondary

#C0AF43

accent

#D63AEE

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#080511

muted

#7B7980

Preview Lab

Preview with #18288F

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

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