#2B21B0#2B21B0

#2B21B0 is a dark, highly saturated blue. Relative luminance 0.047; OKLCH L 38.4% C 0.210 H 273.3°. Best body text is #FFFFFF at 10.78:1 contrast (WCAG AA passes).

Color values

HEX	#2B21B0
RGB	rgb(43, 33, 176)
HSL	hsl(244, 68%, 41%)
HSV	hsv(244, 81%, 69%)
CMYK	cmyk(75.6%, 81.3%, 0%, 31%)
CIE-LAB	lab(25.97, 50.12, -72.64)
CIE-LCH	lch(25.97, 88.25, 304.61°)
OKLab	oklab(38.39% 0.012 -0.2101)
OKLCH	oklch(38.39% 0.21 273.3)
XYZ	xyz(9.3740, 4.7349, 41.4858)
Luminance	0.0474 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B21B0 #A6B021

analogous

#215EB0 #2B21B0 #7221B0

triadic

#2B21B0 #B02B21 #21B02B

tetradic

#2B21B0 #B0215E #A6B021 #21B072

square

#2B21B0 #B0215E #A6B021 #21B072

split-complementary

#2B21B0 #B07221 #5EB021

monochromatic

#120E49 #1E177C #2B21B0 #4135D9 #7169E3

Accessibility & contrast

On white

10.78

#2B21B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#2B21B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B21B0

10.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B21B0	#FFFFFF	#000000	##FFFFFF
##2B21B0	1.00	10.78	1.95	10.78
#FFFFFF	10.78	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044B4

Deuteranopia (green-blind)

#0037AE

Tritanopia (blue-blind)

#004E69

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #2b21b0;
/* rgb */ color: rgb(43, 33, 176);
/* oklch */ color: oklch(38.4% 0.210 273.3);

Tailwind

colors: {
  custom: {
    50: '#7c61c9',
    500: '#2b21b0',
    950: '#000000',
  },
}

SCSS

$custom: #2b21b0;
$custom-light: #7c61c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2b21b0",
  "rgb": {
    "r": 43,
    "g": 33,
    "b": 176
  },
  "hsl": {
    "h": 244.196,
    "s": 68.421,
    "l": 40.98
  },
  "oklch": {
    "l": 0.38385,
    "c": 0.21047,
    "h": 273.3
  },
  "luminance": 0.04736
}

Semantic roles & 50–950 ramp

primary

#2B21B0

secondary

#C1C864

accent

#EB3DDF

background

#F8F5FC

surface

#EFEAF8

border

#CAC6D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #2B21B0

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

Preview Lab → · Contrast checker → · Palette generator →