#21308E#21308E

#21308E is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.4% C 0.155 H 269.6°. Best body text is #FFFFFF at 11.18:1 contrast (WCAG AA passes).

Color values

HEX	#21308E
RGB	rgb(33, 48, 142)
HSL	hsl(232, 62%, 34%)
HSV	hsv(232, 77%, 56%)
CMYK	cmyk(76.8%, 66.2%, 0%, 44.3%)
CIE-LAB	lab(24.92, 28.77, -53.67)
CIE-LCH	lch(24.92, 60.89, 298.20°)
OKLab	oklab(36.42% -0.0009 -0.1552)
OKLCH	oklch(36.42% 0.155 269.6)
XYZ	xyz(6.5650, 4.3895, 26.0872)
Luminance	0.0439 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21308E #8E7F21

analogous

#21678E #21308E #49218E

triadic

#21308E #8E2130 #308E21

tetradic

#21308E #8E2167 #8E7F21 #218E49

square

#21308E #8E2167 #8E7F21 #218E49

split-complementary

#21308E #8E4921 #678E21

monochromatic

#0A0E2B #151F5C #21308E #2D41C0 #5265D7

Accessibility & contrast

On white

11.18

#21308E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#21308E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21308E

11.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21308E	#FFFFFF	#000000	##FFFFFF
##21308E	1.00	11.18	1.88	11.18
#FFFFFF	11.18	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004091

Deuteranopia (green-blind)

#00368C

Tritanopia (blue-blind)

#00495A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #21308e;
/* rgb */ color: rgb(33, 48, 142);
/* oklch */ color: oklch(36.4% 0.155 269.6);

Tailwind

colors: {
  custom: {
    50: '#6e68b0',
    500: '#21308e',
    950: '#000000',
  },
}

SCSS

$custom: #21308e;
$custom-light: #6e68b0;
$custom-dark: #000000;

JSON

{
  "hex": "#21308e",
  "rgb": {
    "r": 33,
    "g": 48,
    "b": 142
  },
  "hsl": {
    "h": 231.743,
    "s": 62.286,
    "l": 34.314
  },
  "oklch": {
    "l": 0.36418,
    "c": 0.1552,
    "h": 269.6
  },
  "luminance": 0.0439
}

Semantic roles & 50–950 ramp

primary

#21308E

secondary

#BAAC50

accent

#CF42E5

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080611

muted

#7B7A80

Preview Lab

Preview with #21308E

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

Preview Lab → · Contrast checker → · Palette generator →