#2B1B8A#2B1B8A

#2B1B8A is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.3% C 0.170 H 278.3°. Best body text is #FFFFFF at 12.91:1 contrast (WCAG AA passes).

Color values

HEX	#2B1B8A
RGB	rgb(43, 27, 138)
HSL	hsl(249, 67%, 32%)
HSV	hsv(249, 80%, 54%)
CMYK	cmyk(68.8%, 80.4%, 0%, 45.9%)
CIE-LAB	lab(20.56, 41.19, -58.32)
CIE-LCH	lch(20.56, 71.40, 305.24°)
OKLab	oklab(33.35% 0.0247 -0.1685)
OKLCH	oklch(33.35% 0.17 278.3)
XYZ	xyz(5.9742, 3.1319, 24.3295)
Luminance	0.0313 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B1B8A #7A8A1B

analogous

#1B428A #2B1B8A #631B8A

triadic

#2B1B8A #8A2B1B #1B8A2B

tetradic

#2B1B8A #8A1B42 #7A8A1B #1B8A63

square

#2B1B8A #8A1B42 #7A8A1B #1B8A63

split-complementary

#2B1B8A #8A631B #428A1B

monochromatic

#0B0724 #1B1157 #2B1B8A #3B25BD #5A45DB

Accessibility & contrast

On white

12.91

#2B1B8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#2B1B8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1B8A

12.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B1B8A	#FFFFFF	#000000	##FFFFFF
##2B1B8A	1.00	12.91	1.63	12.91
#FFFFFF	12.91	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368D

Deuteranopia (green-blind)

#002D88

Tritanopia (blue-blind)

#003C52

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #2b1b8a;
/* rgb */ color: rgb(43, 27, 138);
/* oklch */ color: oklch(33.3% 0.170 278.3);

Tailwind

colors: {
  custom: {
    50: '#735bad',
    500: '#2b1b8a',
    950: '#000000',
  },
}

SCSS

$custom: #2b1b8a;
$custom-light: #735bad;
$custom-dark: #000000;

JSON

{
  "hex": "#2b1b8a",
  "rgb": {
    "r": 43,
    "g": 27,
    "b": 138
  },
  "hsl": {
    "h": 248.649,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.33349,
    "c": 0.17026,
    "h": 278.3
  },
  "luminance": 0.03132
}

Semantic roles & 50–950 ramp

primary

#2B1B8A

secondary

#ABBC45

accent

#EA3ED1

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #2B1B8A

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

Preview Lab → · Contrast checker → · Palette generator →