#21528B#21528B

#21528B is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.6% C 0.108 H 254.3°. Best body text is #FFFFFF at 7.94:1 contrast (WCAG AA passes).

Color values

HEX	#21528B
RGB	rgb(33, 82, 139)
HSL	hsl(212, 62%, 34%)
HSV	hsv(212, 76%, 55%)
CMYK	cmyk(76.3%, 41%, 0%, 45.5%)
CIE-LAB	lab(34.44, 4.44, -36.43)
CIE-LCH	lch(34.44, 36.70, 276.96°)
OKLab	oklab(43.57% -0.0293 -0.104)
OKLCH	oklch(43.57% 0.108 254.3)
XYZ	xyz(8.3030, 8.2211, 25.5703)
Luminance	0.0822 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21528B #8B5A21

analogous

#21878B #21528B #25218B

triadic

#21528B #8B2152 #528B21

tetradic

#21528B #8B2187 #8B5A21 #218B25

square

#21528B #8B2187 #8B5A21 #218B25

split-complementary

#21528B #8B2521 #878B21

monochromatic

#0A1828 #15355A #21528B #2D6FBC #518ED6

Accessibility & contrast

On white

7.94

#21528B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#21528B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21528B

7.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21528B	#FFFFFF	#000000	##FFFFFF
##21528B	1.00	7.94	2.64	7.94
#FFFFFF	7.94	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#37568D

Deuteranopia (green-blind)

#264D8A

Tritanopia (blue-blind)

#005F67

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #21528b;
/* rgb */ color: rgb(33, 82, 139);
/* oklch */ color: oklch(43.6% 0.108 254.3);

Tailwind

colors: {
  custom: {
    50: '#6c82ad',
    500: '#21528b',
    950: '#000000',
  },
}

SCSS

$custom: #21528b;
$custom-light: #6c82ad;
$custom-dark: #000000;

JSON

{
  "hex": "#21528b",
  "rgb": {
    "r": 33,
    "g": 82,
    "b": 139
  },
  "hsl": {
    "h": 212.264,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.43571,
    "c": 0.10802,
    "h": 254.3
  },
  "luminance": 0.08222
}

Semantic roles & 50–950 ramp

primary

#21528B

secondary

#B9884F

accent

#9A43E5

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #21528B

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

Preview Lab → · Contrast checker → · Palette generator →