#21256E#21256E

#21256E is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.2% C 0.124 H 274.2°. Best body text is #FFFFFF at 13.51:1 contrast (WCAG AA passes).

Color values

HEX	#21256E
RGB	rgb(33, 37, 110)
HSL	hsl(237, 54%, 28%)
HSV	hsv(237, 70%, 43%)
CMYK	cmyk(70%, 66.4%, 0%, 56.9%)
CIE-LAB	lab(19.11, 24.07, -42.92)
CIE-LCH	lch(19.11, 49.21, 299.28°)
OKLab	oklab(31.24% 0.0092 -0.1238)
OKLCH	oklch(31.24% 0.124 274.2)
XYZ	xyz(4.1023, 2.7719, 15.0677)
Luminance	0.0277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21256E #6E6A21

analogous

#214B6E #21256E #43216E

triadic

#21256E #6E2125 #256E21

tetradic

#21256E #6E214B #6E6A21 #216E43

square

#21256E #6E214B #6E6A21 #216E43

split-complementary

#21256E #6E4321 #4B6E21

monochromatic

#070818 #13153F #21256E #2F359D #434AC7

Accessibility & contrast

On white

13.51

#21256E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#21256E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21256E

13.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21256E	#FFFFFF	#000000	##FFFFFF
##21256E	1.00	13.51	1.55	13.51
#FFFFFF	13.51	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003270

Deuteranopia (green-blind)

#002B6D

Tritanopia (blue-blind)

#003845

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #21256e;
/* rgb */ color: rgb(33, 37, 110);
/* oklch */ color: oklch(31.2% 0.124 274.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#21256e",
  "rgb": {
    "r": 33,
    "g": 37,
    "b": 110
  },
  "hsl": {
    "h": 236.883,
    "s": 53.846,
    "l": 28.039
  },
  "oklch": {
    "l": 0.31239,
    "c": 0.12413,
    "h": 274.2
  },
  "luminance": 0.02772
}

Semantic roles & 50–950 ramp

primary

#21256E

secondary

#A29D49

accent

#D64BDD

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #21256E

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

Preview Lab → · Contrast checker → · Palette generator →