#21708C#21708C

#21708C is a mid, moderate cyan. Relative luminance 0.138; OKLCH L 51.1% C 0.086 H 226.3°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#21708C
RGB	rgb(33, 112, 140)
HSL	hsl(196, 62%, 34%)
HSV	hsv(196, 76%, 55%)
CMYK	cmyk(76.4%, 20%, 0%, 45.1%)
CIE-LAB	lab(43.95, -13.62, -22.11)
CIE-LCH	lch(43.95, 25.96, 238.36°)
OKLab	oklab(51.11% -0.0592 -0.062)
OKLCH	oklch(51.11% 0.086 226.3)
XYZ	xyz(11.1531, 13.8038, 26.8825)
Luminance	0.1381 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21708C #8C3D21

analogous

#218C73 #21708C #213B8C

triadic

#21708C #8C2170 #708C21

tetradic

#21708C #73218C #8C3D21 #3B8C21

square

#21708C #73218C #8C3D21 #3B8C21

split-complementary

#21708C #8C213B #8C7321

monochromatic

#0A2129 #15485A #21708C #2D98BE #51B3D6

Accessibility & contrast

On white

5.58

#21708C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#21708C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21708C

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21708C	#FFFFFF	#000000	##FFFFFF
##21708C	1.00	5.58	3.76	5.58
#FFFFFF	5.58	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#616E8D

Deuteranopia (green-blind)

#52638C

Tritanopia (blue-blind)

#007879

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #21708c;
/* rgb */ color: rgb(33, 112, 140);
/* oklch */ color: oklch(51.1% 0.086 226.3);

Tailwind

colors: {
  custom: {
    50: '#6d99ad',
    500: '#21708c',
    950: '#000000',
  },
}

SCSS

$custom: #21708c;
$custom-light: #6d99ad;
$custom-dark: #000000;

JSON

{
  "hex": "#21708c",
  "rgb": {
    "r": 33,
    "g": 112,
    "b": 140
  },
  "hsl": {
    "h": 195.701,
    "s": 61.85,
    "l": 33.922
  },
  "oklch": {
    "l": 0.51111,
    "c": 0.08575,
    "h": 226.3
  },
  "luminance": 0.13805
}

Semantic roles & 50–950 ramp

primary

#21708C

secondary

#B96B4F

accent

#6D43E5

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080D10

muted

#7B7E7F

Preview Lab

Preview with #21708C

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

Preview Lab → · Contrast checker → · Palette generator →