#2B1D8D#2B1D8D

#2B1D8D is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.9% C 0.172 H 277.6°. Best body text is #FFFFFF at 12.63:1 contrast (WCAG AA passes).

Color values

HEX	#2B1D8D
RGB	rgb(43, 29, 141)
HSL	hsl(248, 66%, 33%)
HSV	hsv(248, 79%, 55%)
CMYK	cmyk(69.5%, 79.4%, 0%, 44.7%)
CIE-LAB	lab(21.26, 41.11, -59.04)
CIE-LCH	lch(21.26, 71.94, 304.85°)
OKLab	oklab(33.94% 0.0228 -0.1706)
OKLCH	oklch(33.94% 0.172 277.6)
XYZ	xyz(6.2418, 3.3149, 25.5050)
Luminance	0.0331 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B1D8D #7F8D1D

analogous

#1D478D #2B1D8D #631D8D

triadic

#2B1D8D #8D2B1D #1D8D2B

tetradic

#2B1D8D #8D1D47 #7F8D1D #1D8D63

square

#2B1D8D #8D1D47 #7F8D1D #1D8D63

split-complementary

#2B1D8D #8D631D #478D1D

monochromatic

#0C0827 #1C135A #2B1D8D #3A27C0 #5C4BDA

Accessibility & contrast

On white

12.63

#2B1D8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#2B1D8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1D8D

12.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B1D8D	#FFFFFF	#000000	##FFFFFF
##2B1D8D	1.00	12.63	1.66	12.63
#FFFFFF	12.63	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003790

Deuteranopia (green-blind)

#002E8B

Tritanopia (blue-blind)

#003E54

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #2b1d8d;
/* rgb */ color: rgb(43, 29, 141);
/* oklch */ color: oklch(33.9% 0.172 277.6);

Tailwind

colors: {
  custom: {
    50: '#745cb0',
    500: '#2b1d8d',
    950: '#000000',
  },
}

SCSS

$custom: #2b1d8d;
$custom-light: #745cb0;
$custom-dark: #000000;

JSON

{
  "hex": "#2b1d8d",
  "rgb": {
    "r": 43,
    "g": 29,
    "b": 141
  },
  "hsl": {
    "h": 247.5,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.33936,
    "c": 0.1721,
    "h": 277.6
  },
  "luminance": 0.03315
}

Semantic roles & 50–950 ramp

primary

#2B1D8D

secondary

#AEBC4A

accent

#E93FD4

background

#F7F5FA

surface

#EEE9F5

border

#C9C5CF

text

#090411

muted

#7B7980

Preview Lab

Preview with #2B1D8D

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

Preview Lab → · Contrast checker → · Palette generator →