#2B21B3#2B21B3

#2B21B3 is a dark, highly saturated blue. Relative luminance 0.049; OKLCH L 38.7% C 0.214 H 273.0°. Best body text is #FFFFFF at 10.65:1 contrast (WCAG AA passes).

Color values

HEX	#2B21B3
RGB	rgb(43, 33, 179)
HSL	hsl(244, 69%, 42%)
HSV	hsv(244, 82%, 70%)
CMYK	cmyk(76%, 81.6%, 0%, 29.8%)
CIE-LAB	lab(26.32, 51.05, -73.85)
CIE-LCH	lch(26.32, 89.77, 304.65°)
OKLab	oklab(38.73% 0.0113 -0.2136)
OKLCH	oklch(38.73% 0.214 273)
XYZ	xyz(9.6741, 4.8550, 43.0663)
Luminance	0.0486 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B21B3 #A9B321

analogous

#2160B3 #2B21B3 #7421B3

triadic

#2B21B3 #B32B21 #21B32B

tetradic

#2B21B3 #B32160 #A9B321 #21B374

square

#2B21B3 #B32160 #A9B321 #21B374

split-complementary

#2B21B3 #B37421 #60B321

monochromatic

#120E4C #1F177F #2B21B3 #4237DA #736BE4

Accessibility & contrast

On white

10.65

#2B21B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#2B21B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B21B3

10.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B21B3	#FFFFFF	#000000	##FFFFFF
##2B21B3	1.00	10.65	1.97	10.65
#FFFFFF	10.65	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045B7

Deuteranopia (green-blind)

#0037B1

Tritanopia (blue-blind)

#004F6B

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #2b21b3;
/* rgb */ color: rgb(43, 33, 179);
/* oklch */ color: oklch(38.7% 0.214 273.0);

Tailwind

colors: {
  custom: {
    50: '#7c61cb',
    500: '#2b21b3',
    950: '#000000',
  },
}

SCSS

$custom: #2b21b3;
$custom-light: #7c61cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2b21b3",
  "rgb": {
    "r": 43,
    "g": 33,
    "b": 179
  },
  "hsl": {
    "h": 244.11,
    "s": 68.868,
    "l": 41.569
  },
  "oklch": {
    "l": 0.38731,
    "c": 0.21394,
    "h": 273
  },
  "luminance": 0.04856
}

Semantic roles & 50–950 ramp

primary

#2B21B3

secondary

#C3CA66

accent

#EC3CE0

background

#F8F5FC

surface

#F0EAF9

border

#CBC6D2

text

#0B0514

muted

#7C7982

Preview Lab

Preview with #2B21B3

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

Preview Lab → · Contrast checker → · Palette generator →