#180D56#180D56

#180D56 is a very dark, vivid blue. Relative luminance 0.012; OKLCH L 23.9% C 0.122 H 278.7°. Best body text is #FFFFFF at 17.06:1 contrast (WCAG AA passes).

Color values

HEX	#180D56
RGB	rgb(24, 13, 86)
HSL	hsl(249, 74%, 19%)
HSV	hsv(249, 85%, 34%)
CMYK	cmyk(72.1%, 84.9%, 0%, 66.3%)
CIE-LAB	lab(10.21, 29.51, -41.63)
CIE-LCH	lch(10.21, 51.03, 305.33°)
OKLab	oklab(23.91% 0.0185 -0.1202)
OKLCH	oklch(23.91% 0.122 278.7)
XYZ	xyz(2.1998, 1.1537, 8.9091)
Luminance	0.0115 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180D56 #4B560D

analogous

#0D2756 #180D56 #3D0D56

triadic

#180D56 #56180D #0D5618

tetradic

#180D56 #560D27 #4B560D #0D563D

square

#180D56 #560D27 #4B560D #0D563D

split-complementary

#180D56 #563D0D #27560D

monochromatic

#07041B #090521 #180D56 #27158B #361DC0

Accessibility & contrast

On white

17.06

#180D56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#180D56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180D56

17.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180D56	#FFFFFF	#000000	##FFFFFF
##180D56	1.00	17.06	1.23	17.06
#FFFFFF	17.06	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F58

Deuteranopia (green-blind)

#001955

Tritanopia (blue-blind)

#002331

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #180d56;
/* rgb */ color: rgb(24, 13, 86);
/* oklch */ color: oklch(23.9% 0.122 278.7);

Tailwind

colors: {
  custom: {
    50: '#604e87',
    500: '#180d56',
    950: '#000000',
  },
}

SCSS

$custom: #180d56;
$custom-light: #604e87;
$custom-dark: #000000;

JSON

{
  "hex": "#180d56",
  "rgb": {
    "r": 24,
    "g": 13,
    "b": 86
  },
  "hsl": {
    "h": 249.041,
    "s": 73.737,
    "l": 19.412
  },
  "oklch": {
    "l": 0.23907,
    "c": 0.12166,
    "h": 278.7
  },
  "luminance": 0.01154
}

Semantic roles & 50–950 ramp

primary

#180D56

secondary

#82912E

accent

#F037D5

background

#F6F4F8

surface

#EBE7EF

border

#C6C3CA

text

#05010B

muted

#7A777C

Preview Lab

Preview with #180D56

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

Preview Lab → · Contrast checker → · Palette generator →