#180D51#180D51

#180D51 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.3% C 0.115 H 280.0°. Best body text is #FFFFFF at 17.28:1 contrast (WCAG AA passes).

Color values

HEX	#180D51
RGB	rgb(24, 13, 81)
HSL	hsl(250, 72%, 18%)
HSV	hsv(250, 84%, 32%)
CMYK	cmyk(70.4%, 84%, 0%, 68.2%)
CIE-LAB	lab(9.61, 27.78, -39.21)
CIE-LCH	lch(9.61, 48.05, 305.31°)
OKLab	oklab(23.31% 0.02 -0.1132)
OKLCH	oklch(23.31% 0.115 280)
XYZ	xyz(2.0053, 1.0760, 7.8850)
Luminance	0.0108 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180D51 #46510D

analogous

#0D2451 #180D51 #3A0D51

triadic

#180D51 #51180D #0D5118

tetradic

#180D51 #510D24 #46510D #0D513A

square

#180D51 #510D24 #46510D #0D513A

split-complementary

#180D51 #513A0D #24510D

monochromatic

#08041A #08051C #180D51 #281586 #371EBA

Accessibility & contrast

On white

17.28

#180D51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#180D51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180D51

17.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180D51	#FFFFFF	#000000	##FFFFFF
##180D51	1.00	17.28	1.22	17.28
#FFFFFF	17.28	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D53

Deuteranopia (green-blind)

#001850

Tritanopia (blue-blind)

#00212E

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #180d51;
/* rgb */ color: rgb(24, 13, 81);
/* oklch */ color: oklch(23.3% 0.115 280.0);

Tailwind

colors: {
  custom: {
    50: '#5e4d83',
    500: '#180d51',
    950: '#000000',
  },
}

SCSS

$custom: #180d51;
$custom-light: #5e4d83;
$custom-dark: #000000;

JSON

{
  "hex": "#180d51",
  "rgb": {
    "r": 24,
    "g": 13,
    "b": 81
  },
  "hsl": {
    "h": 249.706,
    "s": 72.34,
    "l": 18.431
  },
  "oklch": {
    "l": 0.23306,
    "c": 0.11494,
    "h": 280
  },
  "luminance": 0.01076
}

Semantic roles & 50–950 ramp

primary

#180D51

secondary

#7D8C2E

accent

#EF39D2

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05010B

muted

#79777C

Preview Lab

Preview with #180D51

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

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