#21337C#21337C

#21337C is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.4% C 0.126 H 268.6°. Best body text is #FFFFFF at 11.48:1 contrast (WCAG AA passes).

Color values

HEX	#21337C
RGB	rgb(33, 51, 124)
HSL	hsl(228, 58%, 31%)
HSV	hsv(228, 73%, 49%)
CMYK	cmyk(73.4%, 58.9%, 0%, 51.4%)
CIE-LAB	lab(24.15, 19.73, -43.66)
CIE-LCH	lch(24.15, 47.92, 294.32°)
OKLab	oklab(35.36% -0.003 -0.1258)
OKLCH	oklch(35.36% 0.126 268.6)
XYZ	xyz(5.4479, 4.1457, 19.5780)
Luminance	0.0415 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21337C #7C6A21

analogous

#21607C #21337C #3C217C

triadic

#21337C #7C2133 #337C21

tetradic

#21337C #7C2160 #7C6A21 #217C3C

square

#21337C #7C2160 #7C6A21 #217C3C

split-complementary

#21337C #7C3C21 #607C21

monochromatic

#070B1B #141F4C #21337C #2E47AC #4963CF

Accessibility & contrast

On white

11.48

#21337C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#21337C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21337C

11.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21337C	#FFFFFF	#000000	##FFFFFF
##21337C	1.00	11.48	1.83	11.48
#FFFFFF	11.48	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E7E

Deuteranopia (green-blind)

#00357B

Tritanopia (blue-blind)

#004552

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #21337c;
/* rgb */ color: rgb(33, 51, 124);
/* oklch */ color: oklch(35.4% 0.126 268.6);

Tailwind

colors: {
  custom: {
    50: '#696aa3',
    500: '#21337c',
    950: '#000000',
  },
}

SCSS

$custom: #21337c;
$custom-light: #696aa3;
$custom-dark: #000000;

JSON

{
  "hex": "#21337c",
  "rgb": {
    "r": 33,
    "g": 51,
    "b": 124
  },
  "hsl": {
    "h": 228.132,
    "s": 57.962,
    "l": 30.784
  },
  "oklch": {
    "l": 0.35356,
    "c": 0.12586,
    "h": 268.6
  },
  "luminance": 0.04146
}

Semantic roles & 50–950 ramp

primary

#21337C

secondary

#AF9B4A

accent

#C347E1

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #21337C

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

Preview Lab → · Contrast checker → · Palette generator →