#21377F#21377F

#21377F is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.5% C 0.125 H 267.1°. Best body text is #FFFFFF at 10.95:1 contrast (WCAG AA passes).

Color values

HEX	#21377F
RGB	rgb(33, 55, 127)
HSL	hsl(226, 59%, 31%)
HSV	hsv(226, 74%, 50%)
CMYK	cmyk(74%, 56.7%, 0%, 50.2%)
CIE-LAB	lab(25.53, 18.12, -43.32)
CIE-LCH	lch(25.53, 46.95, 292.70°)
OKLab	oklab(36.47% -0.0063 -0.1247)
OKLCH	oklch(36.47% 0.125 267.1)
XYZ	xyz(5.8228, 4.5874, 20.6531)
Luminance	0.0459 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21377F #7F6921

analogous

#21667F #21377F #3A217F

triadic

#21377F #7F2137 #377F21

tetradic

#21377F #7F2166 #7F6921 #217F3A

square

#21377F #7F2166 #7F6921 #217F3A

split-complementary

#21377F #7F3A21 #667F21

monochromatic

#080D1E #14224E #21377F #2E4CB0 #4A6AD0

Accessibility & contrast

On white

10.95

#21377F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#21377F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21377F

10.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21377F	#FFFFFF	#000000	##FFFFFF
##21377F	1.00	10.95	1.92	10.95
#FFFFFF	10.95	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004181

Deuteranopia (green-blind)

#00387E

Tritanopia (blue-blind)

#004855

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #21377f;
/* rgb */ color: rgb(33, 55, 127);
/* oklch */ color: oklch(36.5% 0.125 267.1);

Tailwind

colors: {
  custom: {
    50: '#6a6da5',
    500: '#21377f',
    950: '#000000',
  },
}

SCSS

$custom: #21377f;
$custom-light: #6a6da5;
$custom-dark: #000000;

JSON

{
  "hex": "#21377f",
  "rgb": {
    "r": 33,
    "g": 55,
    "b": 127
  },
  "hsl": {
    "h": 225.957,
    "s": 58.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.36467,
    "c": 0.1249,
    "h": 267.1
  },
  "luminance": 0.04588
}

Semantic roles & 50–950 ramp

primary

#21377F

secondary

#B2994A

accent

#BD46E2

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #21377F

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

Preview Lab → · Contrast checker → · Palette generator →