#21337F#21337F

#21337F is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.6% C 0.130 H 268.7°. Best body text is #FFFFFF at 11.38:1 contrast (WCAG AA passes).

Color values

HEX	#21337F
RGB	rgb(33, 51, 127)
HSL	hsl(229, 59%, 31%)
HSV	hsv(229, 74%, 50%)
CMYK	cmyk(74%, 59.8%, 0%, 50.2%)
CIE-LAB	lab(24.39, 20.91, -45.16)
CIE-LCH	lch(24.39, 49.76, 294.85°)
OKLab	oklab(35.62% -0.0029 -0.1302)
OKLCH	oklch(35.62% 0.13 268.7)
XYZ	xyz(5.6405, 4.2227, 20.5924)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21337F #7F6D21

analogous

#21627F #21337F #3E217F

triadic

#21337F #7F2133 #337F21

tetradic

#21337F #7F2162 #7F6D21 #217F3E

square

#21337F #7F2162 #7F6D21 #217F3E

split-complementary

#21337F #7F3E21 #627F21

monochromatic

#080C1E #141F4E #21337F #2E47B0 #4A64D0

Accessibility & contrast

On white

11.38

#21337F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#21337F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21337F

11.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21337F	#FFFFFF	#000000	##FFFFFF
##21337F	1.00	11.38	1.84	11.38
#FFFFFF	11.38	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E82

Deuteranopia (green-blind)

#00367E

Tritanopia (blue-blind)

#004653

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #21337f;
/* rgb */ color: rgb(33, 51, 127);
/* oklch */ color: oklch(35.6% 0.130 268.7);

Tailwind

colors: {
  custom: {
    50: '#6a6aa5',
    500: '#21337f',
    950: '#000000',
  },
}

SCSS

$custom: #21337f;
$custom-light: #6a6aa5;
$custom-dark: #000000;

JSON

{
  "hex": "#21337f",
  "rgb": {
    "r": 33,
    "g": 51,
    "b": 127
  },
  "hsl": {
    "h": 228.511,
    "s": 58.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.35618,
    "c": 0.13023,
    "h": 268.7
  },
  "luminance": 0.04223
}

Semantic roles & 50–950 ramp

primary

#21337F

secondary

#B29E4A

accent

#C446E2

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #21337F

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

Preview Lab → · Contrast checker → · Palette generator →