#21558B#21558B

#21558B is a dark, moderate cyan. Relative luminance 0.087; OKLCH L 44.3% C 0.105 H 252.1°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#21558B
RGB	rgb(33, 85, 139)
HSL	hsl(211, 62%, 34%)
HSV	hsv(211, 76%, 55%)
CMYK	cmyk(76.3%, 38.8%, 0%, 45.5%)
CIE-LAB	lab(35.37, 2.48, -34.95)
CIE-LCH	lch(35.37, 35.04, 274.06°)
OKLab	oklab(44.3% -0.0322 -0.0996)
OKLCH	oklch(44.3% 0.105 252.1)
XYZ	xyz(8.5342, 8.6834, 25.6474)
Luminance	0.0868 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21558B #8B5721

analogous

#218A8B #21558B #22218B

triadic

#21558B #8B2155 #558B21

tetradic

#21558B #8B218A #8B5721 #218B22

square

#21558B #8B218A #8B5721 #218B22

split-complementary

#21558B #8B2221 #8A8B21

monochromatic

#0A1928 #15375A #21558B #2D73BC #5192D6

Accessibility & contrast

On white

7.67

#21558B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#21558B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21558B

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21558B	#FFFFFF	#000000	##FFFFFF
##21558B	1.00	7.67	2.74	7.67
#FFFFFF	7.67	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C598D

Deuteranopia (green-blind)

#2C4F8A

Tritanopia (blue-blind)

#006269

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #21558b;
/* rgb */ color: rgb(33, 85, 139);
/* oklch */ color: oklch(44.3% 0.105 252.1);

Tailwind

colors: {
  custom: {
    50: '#6c84ad',
    500: '#21558b',
    950: '#000000',
  },
}

SCSS

$custom: #21558b;
$custom-light: #6c84ad;
$custom-dark: #000000;

JSON

{
  "hex": "#21558b",
  "rgb": {
    "r": 33,
    "g": 85,
    "b": 139
  },
  "hsl": {
    "h": 210.566,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.44296,
    "c": 0.10467,
    "h": 252.1
  },
  "luminance": 0.08684
}

Semantic roles & 50–950 ramp

primary

#21558B

secondary

#B9854F

accent

#9543E5

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #21558B

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

Preview Lab → · Contrast checker → · Palette generator →