#2B1B9E#2B1B9E

#2B1B9E is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.6% C 0.194 H 275.6°. Best body text is #FFFFFF at 11.98:1 contrast (WCAG AA passes).

Color values

HEX	#2B1B9E
RGB	rgb(43, 27, 158)
HSL	hsl(247, 71%, 36%)
HSV	hsv(247, 83%, 62%)
CMYK	cmyk(72.8%, 82.9%, 0%, 38%)
CIE-LAB	lab(22.88, 47.42, -66.86)
CIE-LCH	lch(22.88, 81.97, 305.35°)
OKLab	oklab(35.63% 0.0189 -0.1933)
OKLCH	oklch(35.63% 0.194 275.6)
XYZ	xyz(7.5577, 3.7653, 32.6696)
Luminance	0.0377 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B1B9E #8E9E1B

analogous

#1B4D9E #2B1B9E #6D1B9E

triadic

#2B1B9E #9E2B1B #1B9E2B

tetradic

#2B1B9E #9E1B4D #8E9E1B #1B9E6D

square

#2B1B9E #9E1B4D #8E9E1B #1B9E6D

split-complementary

#2B1B9E #9E6D1B #4D9E1B

monochromatic

#0F0935 #1D126A #2B1B9E #3924D2 #6352E1

Accessibility & contrast

On white

11.98

#2B1B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#2B1B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1B9E

11.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B1B9E	#FFFFFF	#000000	##FFFFFF
##2B1B9E	1.00	11.98	1.75	11.98
#FFFFFF	11.98	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA2

Deuteranopia (green-blind)

#00319C

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #2b1b9e;
/* rgb */ color: rgb(43, 27, 158);
/* oklch */ color: oklch(35.6% 0.194 275.6);

Tailwind

colors: {
  custom: {
    50: '#785cbc',
    500: '#2b1b9e',
    950: '#000000',
  },
}

SCSS

$custom: #2b1b9e;
$custom-light: #785cbc;
$custom-dark: #000000;

JSON

{
  "hex": "#2b1b9e",
  "rgb": {
    "r": 43,
    "g": 27,
    "b": 158
  },
  "hsl": {
    "h": 247.328,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.35633,
    "c": 0.1942,
    "h": 275.6
  },
  "luminance": 0.03766
}

Semantic roles & 50–950 ramp

primary

#2B1B9E

secondary

#B6C451

accent

#EE3AD8

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #2B1B9E

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

Preview Lab → · Contrast checker → · Palette generator →