#21357D#21357D

#21357D is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.9% C 0.125 H 267.8°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#21357D
RGB	rgb(33, 53, 125)
HSL	hsl(227, 58%, 31%)
HSV	hsv(227, 74%, 49%)
CMYK	cmyk(73.6%, 57.6%, 0%, 51%)
CIE-LAB	lab(24.80, 18.73, -43.24)
CIE-LCH	lch(24.80, 47.12, 293.42°)
OKLab	oklab(35.87% -0.0047 -0.1245)
OKLCH	oklch(35.87% 0.125 267.8)
XYZ	xyz(5.6007, 4.3496, 19.9425)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21357D #7D6921

analogous

#21637D #21357D #3B217D

triadic

#21357D #7D2135 #357D21

tetradic

#21357D #7D2163 #7D6921 #217D3B

square

#21357D #7D2163 #7D6921 #217D3B

split-complementary

#21357D #7D3B21 #637D21

monochromatic

#070C1C #14204D #21357D #2E4AAD #4966CF

Accessibility & contrast

On white

11.23

#21357D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#21357D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21357D

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21357D	#FFFFFF	#000000	##FFFFFF
##21357D	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F7F

Deuteranopia (green-blind)

#00377C

Tritanopia (blue-blind)

#004753

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #21357d;
/* rgb */ color: rgb(33, 53, 125);
/* oklch */ color: oklch(35.9% 0.125 267.8);

Tailwind

colors: {
  custom: {
    50: '#6a6ba3',
    500: '#21357d',
    950: '#000000',
  },
}

SCSS

$custom: #21357d;
$custom-light: #6a6ba3;
$custom-dark: #000000;

JSON

{
  "hex": "#21357d",
  "rgb": {
    "r": 33,
    "g": 53,
    "b": 125
  },
  "hsl": {
    "h": 226.957,
    "s": 58.228,
    "l": 30.98
  },
  "oklch": {
    "l": 0.35867,
    "c": 0.12464,
    "h": 267.8
  },
  "luminance": 0.0435
}

Semantic roles & 50–950 ramp

primary

#21357D

secondary

#B09A4A

accent

#C046E1

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #21357D

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

Preview Lab → · Contrast checker → · Palette generator →