#21559C#21559C

#21559C is a mid, vivid cyan. Relative luminance 0.092; OKLCH L 45.4% C 0.128 H 257.3°. Best body text is #FFFFFF at 7.38:1 contrast (WCAG AA passes).

Color values

HEX	#21559C
RGB	rgb(33, 85, 156)
HSL	hsl(215, 65%, 37%)
HSV	hsv(215, 79%, 61%)
CMYK	cmyk(78.8%, 45.5%, 0%, 38.8%)
CIE-LAB	lab(36.40, 9.17, -43.59)
CIE-LCH	lch(36.40, 44.55, 281.88°)
OKLab	oklab(45.44% -0.0283 -0.125)
OKLCH	oklch(45.44% 0.128 257.3)
XYZ	xyz(9.8742, 9.2195, 32.7052)
Luminance	0.0922 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21559C #9C6821

analogous

#21939C #21559C #2B219C

triadic

#21559C #9C2155 #559C21

tetradic

#21559C #9C2193 #9C6821 #219C2B

square

#21559C #9C2193 #9C6821 #219C2B

split-complementary

#21559C #9C2B21 #939C21

monochromatic

#0C1E37 #163969 #21559C #2C71CF #5B92DC

Accessibility & contrast

On white

7.38

#21559C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#21559C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21559C

7.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21559C	#FFFFFF	#000000	##FFFFFF
##21559C	1.00	7.38	2.84	7.38
#FFFFFF	7.38	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#305C9F

Deuteranopia (green-blind)

#16509B

Tritanopia (blue-blind)

#006671

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #21559c;
/* rgb */ color: rgb(33, 85, 156);
/* oklch */ color: oklch(45.4% 0.128 257.3);

Tailwind

colors: {
  custom: {
    50: '#6f84ba',
    500: '#21559c',
    950: '#000000',
  },
}

SCSS

$custom: #21559c;
$custom-light: #6f84ba;
$custom-dark: #000000;

JSON

{
  "hex": "#21559c",
  "rgb": {
    "r": 33,
    "g": 85,
    "b": 156
  },
  "hsl": {
    "h": 214.634,
    "s": 65.079,
    "l": 37.059
  },
  "oklch": {
    "l": 0.45437,
    "c": 0.12813,
    "h": 257.3
  },
  "luminance": 0.09221
}

Semantic roles & 50–950 ramp

primary

#21559C

secondary

#C19458

accent

#A140E8

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #21559C

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

Preview Lab → · Contrast checker → · Palette generator →