#1B1987#1B1987

#1B1987 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.6% C 0.172 H 271.5°. Best body text is #FFFFFF at 13.68:1 contrast (WCAG AA passes).

Color values

HEX	#1B1987
RGB	rgb(27, 25, 135)
HSL	hsl(241, 69%, 31%)
HSV	hsv(241, 81%, 53%)
CMYK	cmyk(80%, 81.5%, 0%, 47.1%)
CIE-LAB	lab(18.70, 39.89, -59.56)
CIE-LCH	lch(18.70, 71.68, 303.81°)
OKLab	oklab(31.65% 0.0045 -0.1724)
OKLCH	oklch(31.65% 0.172 271.5)
XYZ	xyz(5.1713, 2.6770, 23.1611)
Luminance	0.0268 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1987 #858719

analogous

#194E87 #1B1987 #521987

triadic

#1B1987 #871B19 #19871B

tetradic

#1B1987 #87194E #858719 #198752

square

#1B1987 #87194E #858719 #198752

split-complementary

#1B1987 #875219 #4E8719

monochromatic

#060620 #110F53 #1B1987 #2523BB #423FDB

Accessibility & contrast

On white

13.68

#1B1987 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1B1987 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1987

13.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1987	#FFFFFF	#000000	##FFFFFF
##1B1987	1.00	13.68	1.54	13.68
#FFFFFF	13.68	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338A

Deuteranopia (green-blind)

#002885

Tritanopia (blue-blind)

#003B50

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1b1987;
/* rgb */ color: rgb(27, 25, 135);
/* oklch */ color: oklch(31.6% 0.172 271.5);

Tailwind

colors: {
  custom: {
    50: '#6d58ab',
    500: '#1b1987',
    950: '#000000',
  },
}

SCSS

$custom: #1b1987;
$custom-light: #6d58ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1987",
  "rgb": {
    "r": 27,
    "g": 25,
    "b": 135
  },
  "hsl": {
    "h": 241.091,
    "s": 68.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.31645,
    "c": 0.17247,
    "h": 271.5
  },
  "luminance": 0.02678
}

Semantic roles & 50–950 ramp

primary

#1B1987

secondary

#B8BA41

accent

#EC3CE8

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #1B1987

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

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