#21318B#21318B

#21318B is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.3% C 0.150 H 269.4°. Best body text is #FFFFFF at 11.19:1 contrast (WCAG AA passes).

Color values

HEX	#21318B
RGB	rgb(33, 49, 139)
HSL	hsl(231, 62%, 34%)
HSV	hsv(231, 76%, 55%)
CMYK	cmyk(76.3%, 64.7%, 0%, 45.5%)
CIE-LAB	lab(24.90, 26.95, -51.84)
CIE-LCH	lch(24.90, 58.42, 297.47°)
OKLab	oklab(36.32% -0.0015 -0.1498)
OKLCH	oklch(36.32% 0.15 269.4)
XYZ	xyz(6.3841, 4.3834, 24.9307)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21318B #8B7B21

analogous

#21668B #21318B #46218B

triadic

#21318B #8B2131 #318B21

tetradic

#21318B #8B2166 #8B7B21 #218B46

square

#21318B #8B2166 #8B7B21 #218B46

split-complementary

#21318B #8B4621 #668B21

monochromatic

#0A0E28 #15205A #21318B #2D42BC #5165D6

Accessibility & contrast

On white

11.19

#21318B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#21318B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21318B

11.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21318B	#FFFFFF	#000000	##FFFFFF
##21318B	1.00	11.19	1.88	11.19
#FFFFFF	11.19	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408E

Deuteranopia (green-blind)

#003689

Tritanopia (blue-blind)

#004859

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #21318b;
/* rgb */ color: rgb(33, 49, 139);
/* oklch */ color: oklch(36.3% 0.150 269.4);

Tailwind

colors: {
  custom: {
    50: '#6d69ae',
    500: '#21318b',
    950: '#000000',
  },
}

SCSS

$custom: #21318b;
$custom-light: #6d69ae;
$custom-dark: #000000;

JSON

{
  "hex": "#21318b",
  "rgb": {
    "r": 33,
    "g": 49,
    "b": 139
  },
  "hsl": {
    "h": 230.943,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.36319,
    "c": 0.14984,
    "h": 269.4
  },
  "luminance": 0.04384
}

Semantic roles & 50–950 ramp

primary

#21318B

secondary

#B9A94F

accent

#CC43E5

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #21318B

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

Preview Lab → · Contrast checker → · Palette generator →