#1B1081#1B1081

#1B1081 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.9% C 0.172 H 272.9°. Best body text is #FFFFFF at 14.61:1 contrast (WCAG AA passes).

Color values

HEX	#1B1081
RGB	rgb(27, 16, 129)
HSL	hsl(246, 78%, 28%)
HSV	hsv(246, 88%, 51%)
CMYK	cmyk(79.1%, 87.6%, 0%, 49.4%)
CIE-LAB	lab(16.44, 42.34, -59.51)
CIE-LCH	lch(16.44, 73.04, 305.43°)
OKLab	oklab(29.87% 0.0086 -0.1721)
OKLCH	oklch(29.87% 0.172 272.9)
XYZ	xyz(4.5984, 2.1881, 20.9446)
Luminance	0.0219 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1081 #768110

analogous

#103D81 #1B1081 #531081

triadic

#1B1081 #811B10 #10811B

tetradic

#1B1081 #81103D #768110 #108153

square

#1B1081 #81103D #768110 #108153

split-complementary

#1B1081 #815310 #3D8110

monochromatic

#06031B #10094B #1B1081 #2617B7 #3A27E4

Accessibility & contrast

On white

14.61

#1B1081 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#1B1081 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1081

14.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1081	#FFFFFF	#000000	##FFFFFF
##1B1081	1.00	14.61	1.44	14.61
#FFFFFF	14.61	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E84

Deuteranopia (green-blind)

#00237F

Tritanopia (blue-blind)

#00364B

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1b1081;
/* rgb */ color: rgb(27, 16, 129);
/* oklch */ color: oklch(29.9% 0.172 272.9);

Tailwind

colors: {
  custom: {
    50: '#6c53a7',
    500: '#1b1081',
    950: '#000000',
  },
}

SCSS

$custom: #1b1081;
$custom-light: #6c53a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1081",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 129
  },
  "hsl": {
    "h": 245.841,
    "s": 77.931,
    "l": 28.431
  },
  "oklch": {
    "l": 0.29865,
    "c": 0.17231,
    "h": 272.9
  },
  "luminance": 0.02189
}

Semantic roles & 50–950 ramp

primary

#1B1081

secondary

#AAB736

accent

#F433E2

background

#F7F4FA

surface

#EDE8F4

border

#C8C4CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #1B1081

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

Preview Lab → · Contrast checker → · Palette generator →