#21256F#21256F

#21256F is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.3% C 0.126 H 274.2°. Best body text is #FFFFFF at 13.47:1 contrast (WCAG AA passes).

Color values

HEX	#21256F
RGB	rgb(33, 37, 111)
HSL	hsl(237, 54%, 28%)
HSV	hsv(237, 70%, 44%)
CMYK	cmyk(70.3%, 66.7%, 0%, 56.5%)
CIE-LAB	lab(19.20, 24.45, -43.42)
CIE-LCH	lch(19.20, 49.83, 299.38°)
OKLab	oklab(31.34% 0.0091 -0.1252)
OKLCH	oklch(31.34% 0.126 274.2)
XYZ	xyz(4.1571, 2.7938, 15.3560)
Luminance	0.0279 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21256F #6F6B21

analogous

#214C6F #21256F #44216F

triadic

#21256F #6F2125 #256F21

tetradic

#21256F #6F214C #6F6B21 #216F44

square

#21256F #6F214C #6F6B21 #216F44

split-complementary

#21256F #6F4421 #4C6F21

monochromatic

#070818 #131540 #21256F #2F359E #434AC7

Accessibility & contrast

On white

13.47

#21256F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#21256F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21256F

13.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21256F	#FFFFFF	#000000	##FFFFFF
##21256F	1.00	13.47	1.56	13.47
#FFFFFF	13.47	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003271

Deuteranopia (green-blind)

#002B6E

Tritanopia (blue-blind)

#003846

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #21256f;
/* rgb */ color: rgb(33, 37, 111);
/* oklch */ color: oklch(31.3% 0.126 274.2);

Tailwind

colors: {
  custom: {
    50: '#685f99',
    500: '#21256f',
    950: '#000000',
  },
}

SCSS

$custom: #21256f;
$custom-light: #685f99;
$custom-dark: #000000;

JSON

{
  "hex": "#21256f",
  "rgb": {
    "r": 33,
    "g": 37,
    "b": 111
  },
  "hsl": {
    "h": 236.923,
    "s": 54.167,
    "l": 28.235
  },
  "oklch": {
    "l": 0.31335,
    "c": 0.12558,
    "h": 274.2
  },
  "luminance": 0.02794
}

Semantic roles & 50–950 ramp

primary

#21256F

secondary

#A39E49

accent

#D64ADE

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #21256F

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

Preview Lab → · Contrast checker → · Palette generator →