#21337D#21337D

#21337D is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.4% C 0.127 H 268.7°. Best body text is #FFFFFF at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#21337D
RGB	rgb(33, 51, 125)
HSL	hsl(228, 58%, 31%)
HSV	hsv(228, 74%, 49%)
CMYK	cmyk(73.6%, 59.2%, 0%, 51%)
CIE-LAB	lab(24.23, 20.13, -44.16)
CIE-LCH	lch(24.23, 48.53, 294.50°)
OKLab	oklab(35.44% -0.003 -0.1273)
OKLCH	oklch(35.44% 0.127 268.7)
XYZ	xyz(5.5114, 4.1711, 19.9127)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21337D #7D6B21

analogous

#21617D #21337D #3D217D

triadic

#21337D #7D2133 #337D21

tetradic

#21337D #7D2161 #7D6B21 #217D3D

square

#21337D #7D2161 #7D6B21 #217D3D

split-complementary

#21337D #7D3D21 #617D21

monochromatic

#070B1C #141F4D #21337D #2E47AD #4964CF

Accessibility & contrast

On white

11.45

#21337D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#21337D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21337D

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21337D	#FFFFFF	#000000	##FFFFFF
##21337D	1.00	11.45	1.83	11.45
#FFFFFF	11.45	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E80

Deuteranopia (green-blind)

#00367C

Tritanopia (blue-blind)

#004552

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #21337d;
/* rgb */ color: rgb(33, 51, 125);
/* oklch */ color: oklch(35.4% 0.127 268.7);

Tailwind

colors: {
  custom: {
    50: '#6a6aa3',
    500: '#21337d',
    950: '#000000',
  },
}

SCSS

$custom: #21337d;
$custom-light: #6a6aa3;
$custom-dark: #000000;

JSON

{
  "hex": "#21337d",
  "rgb": {
    "r": 33,
    "g": 51,
    "b": 125
  },
  "hsl": {
    "h": 228.261,
    "s": 58.228,
    "l": 30.98
  },
  "oklch": {
    "l": 0.35443,
    "c": 0.12732,
    "h": 268.7
  },
  "luminance": 0.04172
}

Semantic roles & 50–950 ramp

primary

#21337D

secondary

#B09C4A

accent

#C346E1

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #21337D

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

Preview Lab → · Contrast checker → · Palette generator →