#2B1D8E#2B1D8E

#2B1D8E is a dark, vivid blue. Relative luminance 0.033; OKLCH L 34.0% C 0.173 H 277.5°. Best body text is #FFFFFF at 12.58:1 contrast (WCAG AA passes).

Color values

HEX	#2B1D8E
RGB	rgb(43, 29, 142)
HSL	hsl(247, 66%, 34%)
HSV	hsv(247, 80%, 56%)
CMYK	cmyk(69.7%, 79.6%, 0%, 44.3%)
CIE-LAB	lab(21.38, 41.43, -59.48)
CIE-LCH	lch(21.38, 72.48, 304.86°)
OKLab	oklab(34.05% 0.0225 -0.1719)
OKLCH	oklch(34.05% 0.173 277.5)
XYZ	xyz(6.3165, 3.3448, 25.8987)
Luminance	0.0335 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B1D8E #808E1D

analogous

#1D478E #2B1D8E #631D8E

triadic

#2B1D8E #8E2B1D #1D8E2B

tetradic

#2B1D8E #8E1D47 #808E1D #1D8E63

square

#2B1D8E #8E1D47 #808E1D #1D8E63

split-complementary

#2B1D8E #8E631D #478E1D

monochromatic

#0C0828 #1C135B #2B1D8E #3A27C1 #5D4BDA

Accessibility & contrast

On white

12.58

#2B1D8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#2B1D8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1D8E

12.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B1D8E	#FFFFFF	#000000	##FFFFFF
##2B1D8E	1.00	12.58	1.67	12.58
#FFFFFF	12.58	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003891

Deuteranopia (green-blind)

#002E8C

Tritanopia (blue-blind)

#003F55

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #2b1d8e;
/* rgb */ color: rgb(43, 29, 142);
/* oklch */ color: oklch(34.0% 0.173 277.5);

Tailwind

colors: {
  custom: {
    50: '#745cb0',
    500: '#2b1d8e',
    950: '#000000',
  },
}

SCSS

$custom: #2b1d8e;
$custom-light: #745cb0;
$custom-dark: #000000;

JSON

{
  "hex": "#2b1d8e",
  "rgb": {
    "r": 43,
    "g": 29,
    "b": 142
  },
  "hsl": {
    "h": 247.434,
    "s": 66.082,
    "l": 33.529
  },
  "oklch": {
    "l": 0.34047,
    "c": 0.17333,
    "h": 277.5
  },
  "luminance": 0.03345
}

Semantic roles & 50–950 ramp

primary

#2B1D8E

secondary

#AEBD4A

accent

#E93FD4

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #2B1D8E

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

Preview Lab → · Contrast checker → · Palette generator →