#180B51#180B51

#180B51 is a very dark, moderate violet. Relative luminance 0.010; OKLCH L 23.0% C 0.117 H 280.5°. Best body text is #FFFFFF at 17.42:1 contrast (WCAG AA passes).

Color values

HEX	#180B51
RGB	rgb(24, 11, 81)
HSL	hsl(251, 76%, 18%)
HSV	hsv(251, 86%, 32%)
CMYK	cmyk(70.4%, 86.4%, 0%, 68.2%)
CIE-LAB	lab(9.22, 28.90, -39.86)
CIE-LCH	lch(9.22, 49.23, 305.95°)
OKLab	oklab(23.03% 0.0213 -0.115)
OKLCH	oklch(23.03% 0.117 280.5)
XYZ	xyz(1.9811, 1.0275, 7.8769)
Luminance	0.0103 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180B51 #44510B

analogous

#0B2151 #180B51 #3B0B51

triadic

#180B51 #51180B #0B5118

tetradic

#180B51 #510B21 #44510B #0B513B

square

#180B51 #510B21 #44510B #0B513B

split-complementary

#180B51 #513B0B #21510B

monochromatic

#08041B #08041B #180B51 #281287 #381ABD

Accessibility & contrast

On white

17.42

#180B51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#180B51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180B51

17.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180B51	#FFFFFF	#000000	##FFFFFF
##180B51	1.00	17.42	1.21	17.42
#FFFFFF	17.42	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C53

Deuteranopia (green-blind)

#001750

Tritanopia (blue-blind)

#00202E

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #180b51;
/* rgb */ color: rgb(24, 11, 81);
/* oklch */ color: oklch(23.0% 0.117 280.5);

Tailwind

colors: {
  custom: {
    50: '#5f4c83',
    500: '#180b51',
    950: '#000000',
  },
}

SCSS

$custom: #180b51;
$custom-light: #5f4c83;
$custom-dark: #000000;

JSON

{
  "hex": "#180b51",
  "rgb": {
    "r": 24,
    "g": 11,
    "b": 81
  },
  "hsl": {
    "h": 251.143,
    "s": 76.087,
    "l": 18.039
  },
  "oklch": {
    "l": 0.23034,
    "c": 0.11699,
    "h": 280.5
  },
  "luminance": 0.01028
}

Semantic roles & 50–950 ramp

primary

#180B51

secondary

#7B8D2B

accent

#F335CF

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05010B

muted

#79777C

Preview Lab

Preview with #180B51

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

Preview Lab → · Contrast checker → · Palette generator →