#2B1D9D#2B1D9D

#2B1D9D is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.7% C 0.191 H 275.5°. Best body text is #FFFFFF at 11.90:1 contrast (WCAG AA passes).

Color values

HEX	#2B1D9D
RGB	rgb(43, 29, 157)
HSL	hsl(247, 69%, 36%)
HSV	hsv(247, 82%, 62%)
CMYK	cmyk(72.6%, 81.5%, 0%, 38.4%)
CIE-LAB	lab(23.09, 46.16, -65.90)
CIE-LCH	lch(23.09, 80.46, 305.01°)
OKLab	oklab(35.74% 0.0185 -0.1905)
OKLCH	oklch(35.74% 0.191 275.5)
XYZ	xyz(7.5194, 3.8259, 32.2339)
Luminance	0.0383 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B1D9D #8F9D1D

analogous

#1D4F9D #2B1D9D #6B1D9D

triadic

#2B1D9D #9D2B1D #1D9D2B

tetradic

#2B1D9D #9D1D4F #8F9D1D #1D9D6B

square

#2B1D9D #9D1D4F #8F9D1D #1D9D6B

split-complementary

#2B1D9D #9D6B1D #4F9D1D

monochromatic

#0F0A36 #1D1369 #2B1D9D #3927D1 #6455E0

Accessibility & contrast

On white

11.90

#2B1D9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#2B1D9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1D9D

11.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B1D9D	#FFFFFF	#000000	##FFFFFF
##2B1D9D	1.00	11.90	1.77	11.90
#FFFFFF	11.90	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA1

Deuteranopia (green-blind)

#00319B

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #2b1d9d;
/* rgb */ color: rgb(43, 29, 157);
/* oklch */ color: oklch(35.7% 0.191 275.5);

Tailwind

colors: {
  custom: {
    50: '#775dbb',
    500: '#2b1d9d',
    950: '#000000',
  },
}

SCSS

$custom: #2b1d9d;
$custom-light: #775dbb;
$custom-dark: #000000;

JSON

{
  "hex": "#2b1d9d",
  "rgb": {
    "r": 43,
    "g": 29,
    "b": 157
  },
  "hsl": {
    "h": 246.563,
    "s": 68.817,
    "l": 36.471
  },
  "oklch": {
    "l": 0.35743,
    "c": 0.19142,
    "h": 275.5
  },
  "luminance": 0.03827
}

Semantic roles & 50–950 ramp

primary

#2B1D9D

secondary

#B7C353

accent

#EC3CD8

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #2B1D9D

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

Preview Lab → · Contrast checker → · Palette generator →