#21356D#21356D

#21356D is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.6% C 0.101 H 266.4°. Best body text is #FFFFFF at 11.70:1 contrast (WCAG AA passes).

Color values

HEX	#21356D
RGB	rgb(33, 53, 109)
HSL	hsl(224, 54%, 28%)
HSV	hsv(224, 70%, 43%)
CMYK	cmyk(69.7%, 51.4%, 0%, 57.3%)
CIE-LAB	lab(23.58, 12.38, -35.02)
CIE-LCH	lch(23.58, 37.14, 289.47°)
OKLab	oklab(34.56% -0.0063 -0.1003)
OKLCH	oklch(34.56% 0.101 266.4)
XYZ	xyz(4.6597, 3.9732, 14.9864)
Luminance	0.0397 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21356D #6D5921

analogous

#215B6D #21356D #33216D

triadic

#21356D #6D2135 #356D21

tetradic

#21356D #6D215B #6D5921 #216D33

square

#21356D #6D215B #6D5921 #216D33

split-complementary

#21356D #6D3321 #5B6D21

monochromatic

#070B17 #131E3E #21356D #2F4C9C #4265C6

Accessibility & contrast

On white

11.70

#21356D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#21356D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21356D

11.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21356D	#FFFFFF	#000000	##FFFFFF
##21356D	1.00	11.70	1.79	11.70
#FFFFFF	11.70	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#173C6F

Deuteranopia (green-blind)

#04356C

Tritanopia (blue-blind)

#00424B

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #21356d;
/* rgb */ color: rgb(33, 53, 109);
/* oklch */ color: oklch(34.6% 0.101 266.4);

Tailwind

colors: {
  custom: {
    50: '#666b97',
    500: '#21356d',
    950: '#000000',
  },
}

SCSS

$custom: #21356d;
$custom-light: #666b97;
$custom-dark: #000000;

JSON

{
  "hex": "#21356d",
  "rgb": {
    "r": 33,
    "g": 53,
    "b": 109
  },
  "hsl": {
    "h": 224.211,
    "s": 53.521,
    "l": 27.843
  },
  "oklch": {
    "l": 0.34564,
    "c": 0.10054,
    "h": 266.4
  },
  "luminance": 0.03974
}

Semantic roles & 50–950 ramp

primary

#21356D

secondary

#A18A49

accent

#B64BDD

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #21356D

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

Preview Lab → · Contrast checker → · Palette generator →