#18287C#18287C

#18287C is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.7% C 0.143 H 268.4°. Best body text is #FFFFFF at 12.86:1 contrast (WCAG AA passes).

Color values

HEX	#18287C
RGB	rgb(24, 40, 124)
HSL	hsl(230, 68%, 29%)
HSV	hsv(230, 81%, 49%)
CMYK	cmyk(80.6%, 67.7%, 0%, 51.4%)
CIE-LAB	lab(20.70, 26.27, -49.31)
CIE-LCH	lch(20.70, 55.88, 298.05°)
OKLab	oklab(32.67% -0.0039 -0.1427)
OKLCH	oklch(32.67% 0.143 268.4)
XYZ	xyz(4.7723, 3.1665, 19.4245)
Luminance	0.0317 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18287C #7C6C18

analogous

#185A7C #18287C #3A187C

triadic

#18287C #7C1828 #287C18

tetradic

#18287C #7C185A #7C6C18 #187C3A

square

#18287C #7C185A #7C6C18 #187C3A

split-complementary

#18287C #7C3A18 #5A7C18

monochromatic

#05081A #0E1749 #18287C #2239AF #3650D8

Accessibility & contrast

On white

12.86

#18287C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#18287C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18287C

12.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18287C	#FFFFFF	#000000	##FFFFFF
##18287C	1.00	12.86	1.63	12.86
#FFFFFF	12.86	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00377F

Deuteranopia (green-blind)

#002D7A

Tritanopia (blue-blind)

#003E4E

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #18287c;
/* rgb */ color: rgb(24, 40, 124);
/* oklch */ color: oklch(32.7% 0.143 268.4);

Tailwind

colors: {
  custom: {
    50: '#6762a3',
    500: '#18287c',
    950: '#000000',
  },
}

SCSS

$custom: #18287c;
$custom-light: #6762a3;
$custom-dark: #000000;

JSON

{
  "hex": "#18287c",
  "rgb": {
    "r": 24,
    "g": 40,
    "b": 124
  },
  "hsl": {
    "h": 230.4,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.32675,
    "c": 0.14277,
    "h": 268.4
  },
  "luminance": 0.03167
}

Semantic roles & 50–950 ramp

primary

#18287C

secondary

#B19E3F

accent

#CF3DEA

background

#F6F5FA

surface

#EBEAF4

border

#C6C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #18287C

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

Preview Lab → · Contrast checker → · Palette generator →