#21708D#21708D

#21708D is a mid, moderate cyan. Relative luminance 0.138; OKLCH L 51.2% C 0.087 H 227.2°. Best body text is #FFFFFF at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#21708D
RGB	rgb(33, 112, 141)
HSL	hsl(196, 62%, 34%)
HSV	hsv(196, 77%, 55%)
CMYK	cmyk(76.6%, 20.6%, 0%, 44.7%)
CIE-LAB	lab(43.99, -13.26, -22.64)
CIE-LCH	lch(43.99, 26.24, 239.63°)
OKLab	oklab(51.16% -0.0589 -0.0635)
OKLCH	oklch(51.16% 0.087 227.2)
XYZ	xyz(11.2271, 13.8334, 27.2725)
Luminance	0.1384 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21708D #8D3E21

analogous

#218D74 #21708D #213A8D

triadic

#21708D #8D2170 #708D21

tetradic

#21708D #74218D #8D3E21 #3A8D21

square

#21708D #74218D #8D3E21 #3A8D21

split-complementary

#21708D #8D213A #8D7421

monochromatic

#0A212A #15495B #21708D #2D97BF #52B3D6

Accessibility & contrast

On white

5.57

#21708D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.77

#21708D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21708D

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21708D	#FFFFFF	#000000	##FFFFFF
##21708D	1.00	5.57	3.77	5.57
#FFFFFF	5.57	1.00	21.00	1.00
#000000	3.77	21.00	1.00	21.00
##FFFFFF	5.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#616E8E

Deuteranopia (green-blind)

#52638D

Tritanopia (blue-blind)

#00787A

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #21708d;
/* rgb */ color: rgb(33, 112, 141);
/* oklch */ color: oklch(51.2% 0.087 227.2);

Tailwind

colors: {
  custom: {
    50: '#6d99ae',
    500: '#21708d',
    950: '#000000',
  },
}

SCSS

$custom: #21708d;
$custom-light: #6d99ae;
$custom-dark: #000000;

JSON

{
  "hex": "#21708d",
  "rgb": {
    "r": 33,
    "g": 112,
    "b": 141
  },
  "hsl": {
    "h": 196.111,
    "s": 62.069,
    "l": 34.118
  },
  "oklch": {
    "l": 0.51159,
    "c": 0.08659,
    "h": 227.2
  },
  "luminance": 0.13835
}

Semantic roles & 50–950 ramp

primary

#21708D

secondary

#BA6C50

accent

#6E43E5

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080D10

muted

#7B7E7F

Preview Lab

Preview with #21708D

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

Preview Lab → · Contrast checker → · Palette generator →