#18187B#18187B

#18187B is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.9% C 0.159 H 271.4°. Best body text is #FFFFFF at 14.43:1 contrast (WCAG AA passes).

Color values

HEX	#18187B
RGB	rgb(24, 24, 123)
HSL	hsl(240, 67%, 29%)
HSV	hsv(240, 80%, 48%)
CMYK	cmyk(80.5%, 80.5%, 0%, 51.8%)
CIE-LAB	lab(16.88, 36.13, -54.98)
CIE-LCH	lch(16.88, 65.78, 303.31°)
OKLab	oklab(29.9% 0.0039 -0.1592)
OKLCH	oklch(29.9% 0.159 271.4)
XYZ	xyz(4.2773, 2.2770, 18.9491)
Luminance	0.0228 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18187B #7B7B18

analogous

#184A7B #18187B #4A187B

triadic

#18187B #7B1818 #187B18

tetradic

#18187B #7B184A #7B7B18 #187B4A

square

#18187B #7B184A #7B7B18 #187B4A

split-complementary

#18187B #7B4A18 #4A7B18

monochromatic

#05051A #0E0E48 #18187B #2222AE #3636D8

Accessibility & contrast

On white

14.43

#18187B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#18187B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18187B

14.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18187B	#FFFFFF	#000000	##FFFFFF
##18187B	1.00	14.43	1.46	14.43
#FFFFFF	14.43	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F7E

Deuteranopia (green-blind)

#002579

Tritanopia (blue-blind)

#003649

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #18187b;
/* rgb */ color: rgb(24, 24, 123);
/* oklch */ color: oklch(29.9% 0.159 271.4);

Tailwind

colors: {
  custom: {
    50: '#6957a2',
    500: '#18187b',
    950: '#000000',
  },
}

SCSS

$custom: #18187b;
$custom-light: #6957a2;
$custom-dark: #000000;

JSON

{
  "hex": "#18187b",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 123
  },
  "hsl": {
    "h": 240,
    "s": 67.347,
    "l": 28.824
  },
  "oklch": {
    "l": 0.29897,
    "c": 0.15921,
    "h": 271.4
  },
  "luminance": 0.02278
}

Semantic roles & 50–950 ramp

primary

#18187B

secondary

#B0B03F

accent

#EA3EEA

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #18187B

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

Preview Lab → · Contrast checker → · Palette generator →