#2A21B3#2A21B3

#2A21B3 is a dark, highly saturated blue. Relative luminance 0.048; OKLCH L 38.7% C 0.214 H 272.7°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).

Color values

HEX#2A21B3
RGBrgb(42, 33, 179)
HSLhsl(244, 69%, 42%)
HSVhsv(244, 82%, 70%)
CMYKcmyk(76.5%, 81.6%, 0%, 29.8%)
CIE-LABlab(26.26, 50.98, -73.95)
CIE-LCHlch(26.26, 89.82, 304.58°)
OKLaboklab(38.67% 0.0101 -0.214)
OKLCHoklch(38.67% 0.214 272.7)
XYZxyz(9.6327, 4.8336, 43.0644)
Luminance0.0483 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#2A21B3 #AAB321
analogous
#2161B3 #2A21B3 #7321B3
triadic
#2A21B3 #B32A21 #21B32A
tetradic
#2A21B3 #B32161 #AAB321 #21B373
square
#2A21B3 #B32161 #AAB321 #21B373
split-complementary
#2A21B3 #B37321 #61B321
monochromatic
#120E4C #1E177F #2A21B3 #4137DA #726BE4

Accessibility & contrast

On white

10.68
#2A21B3 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.97
#2A21B3 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A21B3
10.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##2A21B3#FFFFFF#000000##FFFFFF
##2A21B31.0010.681.9710.68
#FFFFFF10.681.0021.001.00
#0000001.9721.001.0021.00
##FFFFFF10.681.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0045B7
Deuteranopia (green-blind)
#0037B1
Tritanopia (blue-blind)
#004F6B
Achromatopsia (no color)
#3E3E3E

Design tokens & code

CSS
--color: #2a21b3;
/* rgb */ color: rgb(42, 33, 179);
/* oklch */ color: oklch(38.7% 0.214 272.7);
Tailwind
colors: {
  custom: {
    50: '#7c61cb',
    500: '#2a21b3',
    950: '#000000',
  },
}
SCSS
$custom: #2a21b3;
$custom-light: #7c61cb;
$custom-dark: #000000;
JSON
{
  "hex": "#2a21b3",
  "rgb": {
    "r": 42,
    "g": 33,
    "b": 179
  },
  "hsl": {
    "h": 243.699,
    "s": 68.868,
    "l": 41.569
  },
  "oklch": {
    "l": 0.38671,
    "c": 0.21421,
    "h": 272.7
  },
  "luminance": 0.04835
}

Semantic roles & 50–950 ramp

primary
#2A21B3
secondary
#C3CA66
accent
#EC3CE1
background
#F8F5FC
surface
#F0EAF9
border
#CBC6D2
text
#0B0514
muted
#7C7982

Preview Lab

Preview with #2A21B3

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

Preview Lab → · Contrast checker → · Palette generator →

#2A21B3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva