#21337A#21337A

#21337A is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.2% C 0.123 H 268.5°. Best body text is #FFFFFF at 11.54:1 contrast (WCAG AA passes).

Color values

HEX	#21337A
RGB	rgb(33, 51, 122)
HSL	hsl(228, 57%, 30%)
HSV	hsv(228, 73%, 48%)
CMYK	cmyk(73%, 58.2%, 0%, 52.2%)
CIE-LAB	lab(23.98, 18.94, -42.66)
CIE-LCH	lch(23.98, 46.68, 293.94°)
OKLab	oklab(35.18% -0.0031 -0.1229)
OKLCH	oklch(35.18% 0.123 268.5)
XYZ	xyz(5.3227, 4.0956, 18.9186)
Luminance	0.0410 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21337A #7A6821

analogous

#215F7A #21337A #3B217A

triadic

#21337A #7A2133 #337A21

tetradic

#21337A #7A215F #7A6821 #217A3B

square

#21337A #7A215F #7A6821 #217A3B

split-complementary

#21337A #7A3B21 #5F7A21

monochromatic

#070B1A #141F4A #21337A #2E47AA #4863CD

Accessibility & contrast

On white

11.54

#21337A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#21337A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21337A

11.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21337A	#FFFFFF	#000000	##FFFFFF
##21337A	1.00	11.54	1.82	11.54
#FFFFFF	11.54	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7C

Deuteranopia (green-blind)

#003579

Tritanopia (blue-blind)

#004451

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #21337a;
/* rgb */ color: rgb(33, 51, 122);
/* oklch */ color: oklch(35.2% 0.123 268.5);

Tailwind

colors: {
  custom: {
    50: '#696aa1',
    500: '#21337a',
    950: '#000000',
  },
}

SCSS

$custom: #21337a;
$custom-light: #696aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#21337a",
  "rgb": {
    "r": 33,
    "g": 51,
    "b": 122
  },
  "hsl": {
    "h": 227.865,
    "s": 57.419,
    "l": 30.392
  },
  "oklch": {
    "l": 0.35183,
    "c": 0.12291,
    "h": 268.5
  },
  "luminance": 0.04096
}

Semantic roles & 50–950 ramp

primary

#21337A

secondary

#AD994A

accent

#C247E1

background

#F6F6FA

surface

#ECEBF3

border

#C7C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #21337A

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

Preview Lab → · Contrast checker → · Palette generator →