#2121A8#2121A8

#2121A8 is a dark, highly saturated blue. Relative luminance 0.042; OKLCH L 36.9% C 0.204 H 270.6°. Best body text is #FFFFFF at 11.37:1 contrast (WCAG AA passes).

Color values

HEX	#2121A8
RGB	rgb(33, 33, 168)
HSL	hsl(240, 67%, 39%)
HSV	hsv(240, 80%, 66%)
CMYK	cmyk(80.4%, 80.4%, 0%, 34.1%)
CIE-LAB	lab(24.44, 46.95, -70.37)
CIE-LCH	lch(24.44, 84.59, 303.71°)
OKLab	oklab(36.89% 0.002 -0.2037)
OKLCH	oklch(36.89% 0.204 270.6)
XYZ	xyz(8.2365, 4.2373, 37.4220)
Luminance	0.0424 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2121A8 #A8A821

analogous

#2165A8 #2121A8 #6521A8

triadic

#2121A8 #A82121 #21A821

tetradic

#2121A8 #A82165 #A8A821 #21A865

square

#2121A8 #A82165 #A8A821 #21A865

split-complementary

#2121A8 #A86521 #65A821

monochromatic

#0D0D42 #171775 #2121A8 #3030D6 #6363E0

Accessibility & contrast

On white

11.37

#2121A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#2121A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2121A8

11.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2121A8	#FFFFFF	#000000	##FFFFFF
##2121A8	1.00	11.37	1.85	11.37
#FFFFFF	11.37	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041AC

Deuteranopia (green-blind)

#0033A6

Tritanopia (blue-blind)

#004B65

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #2121a8;
/* rgb */ color: rgb(33, 33, 168);
/* oklch */ color: oklch(36.9% 0.204 270.6);

Tailwind

colors: {
  custom: {
    50: '#765fc3',
    500: '#2121a8',
    950: '#000000',
  },
}

SCSS

$custom: #2121a8;
$custom-light: #765fc3;
$custom-dark: #000000;

JSON

{
  "hex": "#2121a8",
  "rgb": {
    "r": 33,
    "g": 33,
    "b": 168
  },
  "hsl": {
    "h": 240,
    "s": 67.164,
    "l": 39.412
  },
  "oklch": {
    "l": 0.36894,
    "c": 0.20375,
    "h": 270.6
  },
  "luminance": 0.04238
}

Semantic roles & 50–950 ramp

primary

#2121A8

secondary

#C5C55F

accent

#EA3EEA

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0A0513

muted

#7C7982

Preview Lab

Preview with #2121A8

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

Preview Lab → · Contrast checker → · Palette generator →