#180D5C#180D5C

#180D5C is a very dark, vivid blue. Relative luminance 0.013; OKLCH L 24.6% C 0.130 H 277.4°. Best body text is #FFFFFF at 16.79:1 contrast (WCAG AA passes).

Color values

HEX	#180D5C
RGB	rgb(24, 13, 92)
HSL	hsl(248, 75%, 21%)
HSV	hsv(248, 86%, 36%)
CMYK	cmyk(73.9%, 85.9%, 0%, 63.9%)
CIE-LAB	lab(10.95, 31.56, -44.47)
CIE-LCH	lch(10.95, 54.53, 305.36°)
OKLab	oklab(24.64% 0.0166 -0.1285)
OKLCH	oklch(24.64% 0.13 277.4)
XYZ	xyz(2.4518, 1.2545, 10.2361)
Luminance	0.0126 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180D5C #515C0D

analogous

#0D2A5C #180D5C #3F0D5C

triadic

#180D5C #5C180D #0D5C18

tetradic

#180D5C #5C0D2A #515C0D #0D5C3F

square

#180D5C #5C0D2A #515C0D #0D5C3F

split-complementary

#180D5C #5C3F0D #2A5C0D

monochromatic

#07041B #0A0526 #180D5C #261592 #341CC7

Accessibility & contrast

On white

16.79

#180D5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#180D5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180D5C

16.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180D5C	#FFFFFF	#000000	##FFFFFF
##180D5C	1.00	16.79	1.25	16.79
#FFFFFF	16.79	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00215E

Deuteranopia (green-blind)

#001A5B

Tritanopia (blue-blind)

#002535

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #180d5c;
/* rgb */ color: rgb(24, 13, 92);
/* oklch */ color: oklch(24.6% 0.130 277.4);

Tailwind

colors: {
  custom: {
    50: '#614e8b',
    500: '#180d5c',
    950: '#000000',
  },
}

SCSS

$custom: #180d5c;
$custom-light: #614e8b;
$custom-dark: #000000;

JSON

{
  "hex": "#180d5c",
  "rgb": {
    "r": 24,
    "g": 13,
    "b": 92
  },
  "hsl": {
    "h": 248.354,
    "s": 75.238,
    "l": 20.588
  },
  "oklch": {
    "l": 0.24641,
    "c": 0.12956,
    "h": 277.4
  },
  "luminance": 0.01255
}

Semantic roles & 50–950 ramp

primary

#180D5C

secondary

#88962F

accent

#F236D8

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #180D5C

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

Preview Lab → · Contrast checker → · Palette generator →