#21256D#21256D

#21256D is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.1% C 0.123 H 274.3°. Best body text is #FFFFFF at 13.55:1 contrast (WCAG AA passes).

Color values

HEX	#21256D
RGB	rgb(33, 37, 109)
HSL	hsl(237, 54%, 28%)
HSV	hsv(237, 70%, 43%)
CMYK	cmyk(69.7%, 66.1%, 0%, 57.3%)
CIE-LAB	lab(19.01, 23.69, -42.42)
CIE-LCH	lch(19.01, 48.59, 299.18°)
OKLab	oklab(31.14% 0.0092 -0.1223)
OKLCH	oklch(31.14% 0.123 274.3)
XYZ	xyz(4.0482, 2.7502, 14.7825)
Luminance	0.0275 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21256D #6D6921

analogous

#214B6D #21256D #43216D

triadic

#21256D #6D2125 #256D21

tetradic

#21256D #6D214B #6D6921 #216D43

square

#21256D #6D214B #6D6921 #216D43

split-complementary

#21256D #6D4321 #4B6D21

monochromatic

#070817 #13153E #21256D #2F359C #4249C6

Accessibility & contrast

On white

13.55

#21256D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#21256D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21256D

13.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21256D	#FFFFFF	#000000	##FFFFFF
##21256D	1.00	13.55	1.55	13.55
#FFFFFF	13.55	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00326F

Deuteranopia (green-blind)

#002B6C

Tritanopia (blue-blind)

#003745

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #21256d;
/* rgb */ color: rgb(33, 37, 109);
/* oklch */ color: oklch(31.1% 0.123 274.3);

Tailwind

colors: {
  custom: {
    50: '#675f98',
    500: '#21256d',
    950: '#000000',
  },
}

SCSS

$custom: #21256d;
$custom-light: #675f98;
$custom-dark: #000000;

JSON

{
  "hex": "#21256d",
  "rgb": {
    "r": 33,
    "g": 37,
    "b": 109
  },
  "hsl": {
    "h": 236.842,
    "s": 53.521,
    "l": 27.843
  },
  "oklch": {
    "l": 0.31143,
    "c": 0.12268,
    "h": 274.3
  },
  "luminance": 0.02751
}

Semantic roles & 50–950 ramp

primary

#21256D

secondary

#A19C49

accent

#D54BDD

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #21256D

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

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