#21357E#21357E

#21357E is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.0% C 0.126 H 267.9°. Best body text is #FFFFFF at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#21357E
RGB	rgb(33, 53, 126)
HSL	hsl(227, 58%, 31%)
HSV	hsv(227, 74%, 49%)
CMYK	cmyk(73.8%, 57.9%, 0%, 50.6%)
CIE-LAB	lab(24.88, 19.12, -43.74)
CIE-LCH	lch(24.88, 47.74, 293.61°)
OKLab	oklab(35.95% -0.0046 -0.126)
OKLCH	oklch(35.95% 0.126 267.9)
XYZ	xyz(5.6649, 4.3753, 20.2806)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21357E #7E6A21

analogous

#21637E #21357E #3B217E

triadic

#21357E #7E2135 #357E21

tetradic

#21357E #7E2163 #7E6A21 #217E3B

square

#21357E #7E2163 #7E6A21 #217E3B

split-complementary

#21357E #7E3B21 #637E21

monochromatic

#080C1D #14214E #21357E #2E49AE #4A67D0

Accessibility & contrast

On white

11.20

#21357E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#21357E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21357E

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21357E	#FFFFFF	#000000	##FFFFFF
##21357E	1.00	11.20	1.88	11.20
#FFFFFF	11.20	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F81

Deuteranopia (green-blind)

#00377D

Tritanopia (blue-blind)

#004754

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #21357e;
/* rgb */ color: rgb(33, 53, 126);
/* oklch */ color: oklch(36.0% 0.126 267.9);

Tailwind

colors: {
  custom: {
    50: '#6a6ba4',
    500: '#21357e',
    950: '#000000',
  },
}

SCSS

$custom: #21357e;
$custom-light: #6a6ba4;
$custom-dark: #000000;

JSON

{
  "hex": "#21357e",
  "rgb": {
    "r": 33,
    "g": 53,
    "b": 126
  },
  "hsl": {
    "h": 227.097,
    "s": 58.491,
    "l": 31.176
  },
  "oklch": {
    "l": 0.35953,
    "c": 0.12611,
    "h": 267.9
  },
  "luminance": 0.04376
}

Semantic roles & 50–950 ramp

primary

#21357E

secondary

#B19B4A

accent

#C046E2

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #21357E

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

Preview Lab → · Contrast checker → · Palette generator →