#180B4E#180B4E

#180B4E is a very dark, moderate violet. Relative luminance 0.010; OKLCH L 22.7% C 0.113 H 281.4°. Best body text is #FFFFFF at 17.55:1 contrast (WCAG AA passes).

Color values

HEX	#180B4E
RGB	rgb(24, 11, 78)
HSL	hsl(252, 75%, 17%)
HSV	hsv(252, 86%, 31%)
CMYK	cmyk(69.2%, 85.9%, 0%, 69.4%)
CIE-LAB	lab(8.85, 27.88, -38.39)
CIE-LCH	lch(8.85, 47.45, 305.99°)
OKLab	oklab(22.67% 0.0223 -0.1108)
OKLCH	oklch(22.67% 0.113 281.4)
XYZ	xyz(1.8711, 0.9835, 7.2975)
Luminance	0.0098 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.27

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180B4E #414E0B

analogous

#0B1F4E #180B4E #3A0B4E

triadic

#180B4E #4E180B #0B4E18

tetradic

#180B4E #4E0B1F #414E0B #0B4E3A

square

#180B4E #4E0B1F #414E0B #0B4E3A

split-complementary

#180B4E #4E3A0B #1F4E0B

monochromatic

#08041B #08041B #180B4E #291384 #391AB9

Accessibility & contrast

On white

17.55

#180B4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#180B4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180B4E

17.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180B4E	#FFFFFF	#000000	##FFFFFF
##180B4E	1.00	17.55	1.20	17.55
#FFFFFF	17.55	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B50

Deuteranopia (green-blind)

#00174D

Tritanopia (blue-blind)

#001F2C

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #180b4e;
/* rgb */ color: rgb(24, 11, 78);
/* oklch */ color: oklch(22.7% 0.113 281.4);

Tailwind

colors: {
  custom: {
    50: '#5e4c80',
    500: '#180b4e',
    950: '#000000',
  },
}

SCSS

$custom: #180b4e;
$custom-light: #5e4c80;
$custom-dark: #000000;

JSON

{
  "hex": "#180b4e",
  "rgb": {
    "r": 24,
    "g": 11,
    "b": 78
  },
  "hsl": {
    "h": 251.642,
    "s": 75.281,
    "l": 17.451
  },
  "oklch": {
    "l": 0.22671,
    "c": 0.11299,
    "h": 281.4
  },
  "luminance": 0.00984
}

Semantic roles & 50–950 ramp

primary

#180B4E

secondary

#788A2B

accent

#F236CD

background

#F5F4F7

surface

#EAE7EE

border

#C6C3C9

text

#05010A

muted

#79777C

Preview Lab

Preview with #180B4E

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

Preview Lab → · Contrast checker → · Palette generator →