#18287F#18287F

#18287F is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.0% C 0.147 H 268.4°. Best body text is #FFFFFF at 12.74:1 contrast (WCAG AA passes).

Color values

HEX	#18287F
RGB	rgb(24, 40, 127)
HSL	hsl(231, 68%, 30%)
HSV	hsv(231, 81%, 50%)
CMYK	cmyk(81.1%, 68.5%, 0%, 50.2%)
CIE-LAB	lab(20.99, 27.45, -50.73)
CIE-LCH	lch(20.99, 57.68, 298.42°)
OKLab	oklab(32.98% -0.0041 -0.1469)
OKLCH	oklch(32.98% 0.147 268.4)
XYZ	xyz(4.9649, 3.2435, 20.4389)
Luminance	0.0324 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18287F #7F6F18

analogous

#185B7F #18287F #3C187F

triadic

#18287F #7F1828 #287F18

tetradic

#18287F #7F185B #7F6F18 #187F3C

square

#18287F #7F185B #7F6F18 #187F3C

split-complementary

#18287F #7F3C18 #5B7F18

monochromatic

#05081A #0E184C #18287F #2238B2 #3851D9

Accessibility & contrast

On white

12.74

#18287F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#18287F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18287F

12.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18287F	#FFFFFF	#000000	##FFFFFF
##18287F	1.00	12.74	1.65	12.74
#FFFFFF	12.74	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003782

Deuteranopia (green-blind)

#002E7D

Tritanopia (blue-blind)

#003F50

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #18287f;
/* rgb */ color: rgb(24, 40, 127);
/* oklch */ color: oklch(33.0% 0.147 268.4);

Tailwind

colors: {
  custom: {
    50: '#6862a5',
    500: '#18287f',
    950: '#000000',
  },
}

SCSS

$custom: #18287f;
$custom-light: #6862a5;
$custom-dark: #000000;

JSON

{
  "hex": "#18287f",
  "rgb": {
    "r": 24,
    "g": 40,
    "b": 127
  },
  "hsl": {
    "h": 230.68,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.32981,
    "c": 0.14692,
    "h": 268.4
  },
  "luminance": 0.03244
}

Semantic roles & 50–950 ramp

primary

#18287F

secondary

#B3A13F

accent

#D03DEB

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #18287F

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

Preview Lab → · Contrast checker → · Palette generator →