#21709D#21709D

#21709D is a mid, moderate cyan. Relative luminance 0.143; OKLCH L 52.0% C 0.102 H 238.8°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#21709D
RGB	rgb(33, 112, 157)
HSL	hsl(202, 65%, 37%)
HSV	hsv(202, 79%, 62%)
CMYK	cmyk(79%, 28.7%, 0%, 38.4%)
CIE-LAB	lab(44.72, -7.44, -30.99)
CIE-LCH	lch(44.72, 31.87, 256.51°)
OKLab	oklab(51.98% -0.053 -0.0876)
OKLCH	oklch(51.98% 0.102 238.8)
XYZ	xyz(12.5048, 14.3445, 34.0015)
Luminance	0.1435 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21709D #9D4E21

analogous

#219D8C #21709D #21329D

triadic

#21709D #9D2170 #709D21

tetradic

#21709D #8C219D #9D4E21 #329D21

square

#21709D #8C219D #9D4E21 #329D21

split-complementary

#21709D #9D2132 #9D8C21

monochromatic

#0C2838 #164C6A #21709D #2C94D0 #5CAEDD

Accessibility & contrast

On white

5.43

#21709D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#21709D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21709D

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21709D	#FFFFFF	#000000	##FFFFFF
##21709D	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B709F

Deuteranopia (green-blind)

#4A659C

Tritanopia (blue-blind)

#007B80

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #21709d;
/* rgb */ color: rgb(33, 112, 157);
/* oklch */ color: oklch(52.0% 0.102 238.8);

Tailwind

colors: {
  custom: {
    50: '#7098ba',
    500: '#21709d',
    950: '#000000',
  },
}

SCSS

$custom: #21709d;
$custom-light: #7098ba;
$custom-dark: #000000;

JSON

{
  "hex": "#21709d",
  "rgb": {
    "r": 33,
    "g": 112,
    "b": 157
  },
  "hsl": {
    "h": 201.774,
    "s": 65.263,
    "l": 37.255
  },
  "oklch": {
    "l": 0.51981,
    "c": 0.10243,
    "h": 238.8
  },
  "luminance": 0.14346
}

Semantic roles & 50–950 ramp

primary

#21709D

secondary

#C17F59

accent

#7D40E8

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090D11

muted

#7B7E80

Preview Lab

Preview with #21709D

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

Preview Lab → · Contrast checker → · Palette generator →