#21357F#21357F

#21357F is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.0% C 0.128 H 267.9°. Best body text is #FFFFFF at 11.17:1 contrast (WCAG AA passes).

Color values

HEX	#21357F
RGB	rgb(33, 53, 127)
HSL	hsl(227, 59%, 31%)
HSV	hsv(227, 74%, 50%)
CMYK	cmyk(74%, 58.3%, 0%, 50.2%)
CIE-LAB	lab(24.96, 19.52, -44.24)
CIE-LCH	lch(24.96, 48.36, 293.80°)
OKLab	oklab(36.04% -0.0046 -0.1275)
OKLCH	oklch(36.04% 0.128 267.9)
XYZ	xyz(5.7297, 4.4013, 20.6221)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21357F #7F6B21

analogous

#21647F #21357F #3C217F

triadic

#21357F #7F2135 #357F21

tetradic

#21357F #7F2164 #7F6B21 #217F3C

square

#21357F #7F2164 #7F6B21 #217F3C

split-complementary

#21357F #7F3C21 #647F21

monochromatic

#080C1E #14214E #21357F #2E49B0 #4A67D0

Accessibility & contrast

On white

11.17

#21357F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#21357F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21357F

11.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21357F	#FFFFFF	#000000	##FFFFFF
##21357F	1.00	11.17	1.88	11.17
#FFFFFF	11.17	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004082

Deuteranopia (green-blind)

#00377E

Tritanopia (blue-blind)

#004754

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #21357f;
/* rgb */ color: rgb(33, 53, 127);
/* oklch */ color: oklch(36.0% 0.128 267.9);

Tailwind

colors: {
  custom: {
    50: '#6a6ba5',
    500: '#21357f',
    950: '#000000',
  },
}

SCSS

$custom: #21357f;
$custom-light: #6a6ba5;
$custom-dark: #000000;

JSON

{
  "hex": "#21357f",
  "rgb": {
    "r": 33,
    "g": 53,
    "b": 127
  },
  "hsl": {
    "h": 227.234,
    "s": 58.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.36039,
    "c": 0.12757,
    "h": 267.9
  },
  "luminance": 0.04402
}

Semantic roles & 50–950 ramp

primary

#21357F

secondary

#B29C4A

accent

#C146E2

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #21357F

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

Preview Lab → · Contrast checker → · Palette generator →