#18278D#18278D

#18278D is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.3% C 0.167 H 268.3°. Best body text is #FFFFFF at 12.25:1 contrast (WCAG AA passes).

Color values

HEX	#18278D
RGB	rgb(24, 39, 141)
HSL	hsl(232, 71%, 32%)
HSV	hsv(232, 83%, 55%)
CMYK	cmyk(83%, 72.3%, 0%, 44.7%)
CIE-LAB	lab(22.19, 33.47, -57.55)
CIE-LCH	lch(22.19, 66.58, 300.18°)
OKLab	oklab(34.28% -0.0048 -0.1668)
OKLCH	oklch(34.28% 0.167 268.3)
XYZ	xyz(5.9083, 3.5676, 25.5714)
Luminance	0.0357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18278D #8D7E18

analogous

#18618D #18278D #44188D

triadic

#18278D #8D1827 #278D18

tetradic

#18278D #8D1861 #8D7E18 #188D44

square

#18278D #8D1861 #8D7E18 #188D44

split-complementary

#18278D #8D4418 #618D18

monochromatic

#060A24 #0F1959 #18278D #2135C1 #4155DF

Accessibility & contrast

On white

12.25

#18278D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#18278D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18278D

12.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18278D	#FFFFFF	#000000	##FFFFFF
##18278D	1.00	12.25	1.71	12.25
#FFFFFF	12.25	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B90

Deuteranopia (green-blind)

#002F8B

Tritanopia (blue-blind)

#004457

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #18278d;
/* rgb */ color: rgb(24, 39, 141);
/* oklch */ color: oklch(34.3% 0.167 268.3);

Tailwind

colors: {
  custom: {
    50: '#6c61af',
    500: '#18278d',
    950: '#000000',
  },
}

SCSS

$custom: #18278d;
$custom-light: #6c61af;
$custom-dark: #000000;

JSON

{
  "hex": "#18278d",
  "rgb": {
    "r": 24,
    "g": 39,
    "b": 141
  },
  "hsl": {
    "h": 232.308,
    "s": 70.909,
    "l": 32.353
  },
  "oklch": {
    "l": 0.34282,
    "c": 0.16683,
    "h": 268.3
  },
  "luminance": 0.03568
}

Semantic roles & 50–950 ramp

primary

#18278D

secondary

#BFAF42

accent

#D73AEE

background

#F7F5FA

surface

#EDEAF5

border

#C8C6CF

text

#080511

muted

#7B7980

Preview Lab

Preview with #18278D

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

Preview Lab → · Contrast checker → · Palette generator →