#18277B#18277B

#18277B is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.4% C 0.143 H 268.7°. Best body text is #FFFFFF at 13.00:1 contrast (WCAG AA passes).

Color values

HEX	#18277B
RGB	rgb(24, 39, 123)
HSL	hsl(231, 67%, 29%)
HSV	hsv(231, 80%, 48%)
CMYK	cmyk(80.5%, 68.3%, 0%, 51.8%)
CIE-LAB	lab(20.34, 26.57, -49.27)
CIE-LCH	lch(20.34, 55.97, 298.34°)
OKLab	oklab(32.38% -0.0033 -0.1426)
OKLCH	oklch(32.38% 0.143 268.7)
XYZ	xyz(4.6761, 3.0748, 19.0821)
Luminance	0.0307 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18277B #7B6C18

analogous

#18597B #18277B #3B187B

triadic

#18277B #7B1827 #277B18

tetradic

#18277B #7B1859 #7B6C18 #187B3B

square

#18277B #7B1859 #7B6C18 #187B3B

split-complementary

#18277B #7B3B18 #597B18

monochromatic

#05081A #0E1748 #18277B #2237AE #364ED8

Accessibility & contrast

On white

13.00

#18277B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#18277B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18277B

13.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18277B	#FFFFFF	#000000	##FFFFFF
##18277B	1.00	13.00	1.62	13.00
#FFFFFF	13.00	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	13.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00367E

Deuteranopia (green-blind)

#002C79

Tritanopia (blue-blind)

#003D4D

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #18277b;
/* rgb */ color: rgb(24, 39, 123);
/* oklch */ color: oklch(32.4% 0.143 268.7);

Tailwind

colors: {
  custom: {
    50: '#6761a2',
    500: '#18277b',
    950: '#000000',
  },
}

SCSS

$custom: #18277b;
$custom-light: #6761a2;
$custom-dark: #000000;

JSON

{
  "hex": "#18277b",
  "rgb": {
    "r": 24,
    "g": 39,
    "b": 123
  },
  "hsl": {
    "h": 230.909,
    "s": 67.347,
    "l": 28.824
  },
  "oklch": {
    "l": 0.32383,
    "c": 0.14262,
    "h": 268.7
  },
  "luminance": 0.03075
}

Semantic roles & 50–950 ramp

primary

#18277B

secondary

#B09F3F

accent

#D03EEA

background

#F6F5FA

surface

#EBE9F4

border

#C6C5CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #18277B

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

Preview Lab → · Contrast checker → · Palette generator →