#1B1889#1B1889

#1B1889 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.8% C 0.176 H 271.4°. Best body text is #FFFFFF at 13.65:1 contrast (WCAG AA passes).

Color values

HEX	#1B1889
RGB	rgb(27, 24, 137)
HSL	hsl(242, 70%, 32%)
HSV	hsv(242, 82%, 54%)
CMYK	cmyk(80.3%, 82.5%, 0%, 46.3%)
CIE-LAB	lab(18.76, 41.08, -60.71)
CIE-LCH	lch(18.76, 73.30, 304.09°)
OKLab	oklab(31.76% 0.0044 -0.1757)
OKLCH	oklch(31.76% 0.176 271.4)
XYZ	xyz(5.2925, 2.6918, 23.9027)
Luminance	0.0269 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1889 #868918

analogous

#184E89 #1B1889 #541889

triadic

#1B1889 #891B18 #18891B

tetradic

#1B1889 #89184E #868918 #188954

square

#1B1889 #89184E #868918 #188954

split-complementary

#1B1889 #895418 #4E8918

monochromatic

#060621 #110F55 #1B1889 #2521BD #423EDD

Accessibility & contrast

On white

13.65

#1B1889 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1B1889 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1889

13.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1889	#FFFFFF	#000000	##FFFFFF
##1B1889	1.00	13.65	1.54	13.65
#FFFFFF	13.65	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338C

Deuteranopia (green-blind)

#002887

Tritanopia (blue-blind)

#003C51

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b1889;
/* rgb */ color: rgb(27, 24, 137);
/* oklch */ color: oklch(31.8% 0.176 271.4);

Tailwind

colors: {
  custom: {
    50: '#6d58ad',
    500: '#1b1889',
    950: '#000000',
  },
}

SCSS

$custom: #1b1889;
$custom-light: #6d58ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1889",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 137
  },
  "hsl": {
    "h": 241.593,
    "s": 70.186,
    "l": 31.569
  },
  "oklch": {
    "l": 0.31761,
    "c": 0.17578,
    "h": 271.4
  },
  "luminance": 0.02692
}

Semantic roles & 50–950 ramp

primary

#1B1889

secondary

#B9BD40

accent

#ED3BE8

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #1B1889

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

Preview Lab → · Contrast checker → · Palette generator →