#18287E#18287E

#18287E is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.9% C 0.146 H 268.4°. Best body text is #FFFFFF at 12.78:1 contrast (WCAG AA passes).

Color values

HEX	#18287E
RGB	rgb(24, 40, 126)
HSL	hsl(231, 68%, 29%)
HSV	hsv(231, 81%, 49%)
CMYK	cmyk(81%, 68.3%, 0%, 50.6%)
CIE-LAB	lab(20.90, 27.06, -50.26)
CIE-LCH	lch(20.90, 57.08, 298.30°)
OKLab	oklab(32.88% -0.004 -0.1455)
OKLCH	oklch(32.88% 0.146 268.4)
XYZ	xyz(4.9001, 3.2176, 20.0974)
Luminance	0.0322 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18287E #7E6E18

analogous

#185B7E #18287E #3B187E

triadic

#18287E #7E1828 #287E18

tetradic

#18287E #7E185B #7E6E18 #187E3B

square

#18287E #7E185B #7E6E18 #187E3B

split-complementary

#18287E #7E3B18 #5B7E18

monochromatic

#05081A #0E184B #18287E #2238B1 #3751D9

Accessibility & contrast

On white

12.78

#18287E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#18287E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18287E

12.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18287E	#FFFFFF	#000000	##FFFFFF
##18287E	1.00	12.78	1.64	12.78
#FFFFFF	12.78	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003781

Deuteranopia (green-blind)

#002D7C

Tritanopia (blue-blind)

#003F4F

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #18287e;
/* rgb */ color: rgb(24, 40, 126);
/* oklch */ color: oklch(32.9% 0.146 268.4);

Tailwind

colors: {
  custom: {
    50: '#6862a4',
    500: '#18287e',
    950: '#000000',
  },
}

SCSS

$custom: #18287e;
$custom-light: #6862a4;
$custom-dark: #000000;

JSON

{
  "hex": "#18287e",
  "rgb": {
    "r": 24,
    "g": 40,
    "b": 126
  },
  "hsl": {
    "h": 230.588,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.32878,
    "c": 0.14555,
    "h": 268.4
  },
  "luminance": 0.03218
}

Semantic roles & 50–950 ramp

primary

#18287E

secondary

#B2A03F

accent

#D03DEB

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #18287E

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

Preview Lab → · Contrast checker → · Palette generator →