#21278F#21278F

#21278F is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.9% C 0.167 H 271.4°. Best body text is #FFFFFF at 11.99:1 contrast (WCAG AA passes).

Color values

HEX	#21278F
RGB	rgb(33, 39, 143)
HSL	hsl(237, 63%, 35%)
HSV	hsv(237, 77%, 56%)
CMYK	cmyk(76.9%, 72.7%, 0%, 43.9%)
CIE-LAB	lab(22.85, 34.99, -57.69)
CIE-LCH	lch(22.85, 67.47, 301.24°)
OKLab	oklab(34.95% 0.0042 -0.167)
OKLCH	oklch(34.95% 0.167 271.4)
XYZ	xyz(6.3090, 3.7569, 26.3739)
Luminance	0.0376 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21278F #8F8921

analogous

#215E8F #21278F #52218F

triadic

#21278F #8F2127 #278F21

tetradic

#21278F #8F215E #8F8921 #218F52

square

#21278F #8F215E #8F8921 #218F52

split-complementary

#21278F #8F5221 #5E8F21

monochromatic

#0A0C2C #16195D #21278F #2C35C1 #535AD7

Accessibility & contrast

On white

11.99

#21278F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#21278F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21278F

11.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21278F	#FFFFFF	#000000	##FFFFFF
##21278F	1.00	11.99	1.75	11.99
#FFFFFF	11.99	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C92

Deuteranopia (green-blind)

#00318D

Tritanopia (blue-blind)

#004458

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #21278f;
/* rgb */ color: rgb(33, 39, 143);
/* oklch */ color: oklch(34.9% 0.167 271.4);

Tailwind

colors: {
  custom: {
    50: '#6f62b1',
    500: '#21278f',
    950: '#000000',
  },
}

SCSS

$custom: #21278f;
$custom-light: #6f62b1;
$custom-dark: #000000;

JSON

{
  "hex": "#21278f",
  "rgb": {
    "r": 33,
    "g": 39,
    "b": 143
  },
  "hsl": {
    "h": 236.727,
    "s": 62.5,
    "l": 34.51
  },
  "oklch": {
    "l": 0.34946,
    "c": 0.16702,
    "h": 271.4
  },
  "luminance": 0.03758
}

Semantic roles & 50–950 ramp

primary

#21278F

secondary

#BBB551

accent

#DD42E6

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #21278F

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

Preview Lab → · Contrast checker → · Palette generator →