#21308F#21308F

#21308F is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.5% C 0.157 H 269.6°. Best body text is #FFFFFF at 11.15:1 contrast (WCAG AA passes).

Color values

HEX	#21308F
RGB	rgb(33, 48, 143)
HSL	hsl(232, 63%, 35%)
HSV	hsv(232, 77%, 56%)
CMYK	cmyk(76.9%, 66.4%, 0%, 43.9%)
CIE-LAB	lab(25.01, 29.15, -54.13)
CIE-LCH	lch(25.01, 61.48, 298.30°)
OKLab	oklab(36.52% -0.001 -0.1566)
OKLCH	oklch(36.52% 0.157 269.6)
XYZ	xyz(6.6404, 4.4197, 26.4844)
Luminance	0.0442 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21308F #8F8021

analogous

#21678F #21308F #49218F

triadic

#21308F #8F2130 #308F21

tetradic

#21308F #8F2167 #8F8021 #218F49

square

#21308F #8F2167 #8F8021 #218F49

split-complementary

#21308F #8F4921 #678F21

monochromatic

#0A0F2C #161F5D #21308F #2C41C1 #5365D7

Accessibility & contrast

On white

11.15

#21308F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#21308F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21308F

11.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21308F	#FFFFFF	#000000	##FFFFFF
##21308F	1.00	11.15	1.88	11.15
#FFFFFF	11.15	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004192

Deuteranopia (green-blind)

#00368D

Tritanopia (blue-blind)

#00495B

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #21308f;
/* rgb */ color: rgb(33, 48, 143);
/* oklch */ color: oklch(36.5% 0.157 269.6);

Tailwind

colors: {
  custom: {
    50: '#6f68b1',
    500: '#21308f',
    950: '#000000',
  },
}

SCSS

$custom: #21308f;
$custom-light: #6f68b1;
$custom-dark: #000000;

JSON

{
  "hex": "#21308f",
  "rgb": {
    "r": 33,
    "g": 48,
    "b": 143
  },
  "hsl": {
    "h": 231.818,
    "s": 62.5,
    "l": 34.51
  },
  "oklch": {
    "l": 0.36515,
    "c": 0.15656,
    "h": 269.6
  },
  "luminance": 0.0442
}

Semantic roles & 50–950 ramp

primary

#21308F

secondary

#BBAC51

accent

#CF42E6

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #21308F

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

Preview Lab → · Contrast checker → · Palette generator →