#21339E#21339E

#21339E is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.5% C 0.173 H 268.8°. Best body text is #FFFFFF at 10.33:1 contrast (WCAG AA passes).

Color values

HEX	#21339E
RGB	rgb(33, 51, 158)
HSL	hsl(231, 65%, 37%)
HSV	hsv(231, 79%, 62%)
CMYK	cmyk(79.1%, 67.7%, 0%, 38%)
CIE-LAB	lab(27.18, 32.81, -59.78)
CIE-LCH	lch(27.18, 68.19, 298.76°)
OKLab	oklab(38.54% -0.0037 -0.173)
OKLCH	oklch(38.54% 0.173 268.8)
XYZ	xyz(7.9805, 5.1587, 32.9163)
Luminance	0.0516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21339E #9E8C21

analogous

#21729E #21339E #4E219E

triadic

#21339E #9E2133 #339E21

tetradic

#21339E #9E2172 #9E8C21 #219E4E

square

#21339E #9E2172 #9E8C21 #219E4E

split-complementary

#21339E #9E4E21 #729E21

monochromatic

#0C1239 #16236B #21339E #2C43D1 #5C6FDD

Accessibility & contrast

On white

10.33

#21339E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#21339E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21339E

10.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21339E	#FFFFFF	#000000	##FFFFFF
##21339E	1.00	10.33	2.03	10.33
#FFFFFF	10.33	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046A1

Deuteranopia (green-blind)

#003A9C

Tritanopia (blue-blind)

#005064

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #21339e;
/* rgb */ color: rgb(33, 51, 158);
/* oklch */ color: oklch(38.5% 0.173 268.8);

Tailwind

colors: {
  custom: {
    50: '#726bbc',
    500: '#21339e',
    950: '#000000',
  },
}

SCSS

$custom: #21339e;
$custom-light: #726bbc;
$custom-dark: #000000;

JSON

{
  "hex": "#21339e",
  "rgb": {
    "r": 33,
    "g": 51,
    "b": 158
  },
  "hsl": {
    "h": 231.36,
    "s": 65.445,
    "l": 37.451
  },
  "oklch": {
    "l": 0.38536,
    "c": 0.17309,
    "h": 268.8
  },
  "luminance": 0.0516
}

Semantic roles & 50–950 ramp

primary

#21339E

secondary

#C1B259

accent

#D03FE8

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #21339E

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

Preview Lab → · Contrast checker → · Palette generator →