#180F52#180F52

#180F52 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.7% C 0.114 H 279.2°. Best body text is #FFFFFF at 17.09:1 contrast (WCAG AA passes).

Color values

HEX	#180F52
RGB	rgb(24, 15, 82)
HSL	hsl(248, 69%, 19%)
HSV	hsv(248, 82%, 32%)
CMYK	cmyk(70.7%, 81.7%, 0%, 67.8%)
CIE-LAB	lab(10.14, 26.94, -39.01)
CIE-LCH	lch(10.14, 47.41, 304.63°)
OKLab	oklab(23.72% 0.0183 -0.1126)
OKLCH	oklch(23.72% 0.114 279.2)
XYZ	xyz(2.0700, 1.1449, 8.0929)
Luminance	0.0115 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180F52 #49520F

analogous

#0F2852 #180F52 #3A0F52

triadic

#180F52 #52180F #0F5218

tetradic

#180F52 #520F28 #49520F #0F523A

square

#180F52 #520F28 #49520F #0F523A

split-complementary

#180F52 #523A0F #28520F

monochromatic

#08051A #09061E #180F52 #271886 #3622B9

Accessibility & contrast

On white

17.09

#180F52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#180F52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180F52

17.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180F52	#FFFFFF	#000000	##FFFFFF
##180F52	1.00	17.09	1.23	17.09
#FFFFFF	17.09	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E54

Deuteranopia (green-blind)

#001951

Tritanopia (blue-blind)

#00222F

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #180f52;
/* rgb */ color: rgb(24, 15, 82);
/* oklch */ color: oklch(23.7% 0.114 279.2);

Tailwind

colors: {
  custom: {
    50: '#5f4f83',
    500: '#180f52',
    950: '#000000',
  },
}

SCSS

$custom: #180f52;
$custom-light: #5f4f83;
$custom-dark: #000000;

JSON

{
  "hex": "#180f52",
  "rgb": {
    "r": 24,
    "g": 15,
    "b": 82
  },
  "hsl": {
    "h": 248.06,
    "s": 69.072,
    "l": 19.02
  },
  "oklch": {
    "l": 0.23718,
    "c": 0.11411,
    "h": 279.2
  },
  "luminance": 0.01145
}

Semantic roles & 50–950 ramp

primary

#180F52

secondary

#808C31

accent

#EC3CD4

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05020B

muted

#79787C

Preview Lab

Preview with #180F52

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

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