#21718A#21718A

#21718A is a mid, moderate cyan. Relative luminance 0.140; OKLCH L 51.3% C 0.084 H 223.3°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#21718A
RGB	rgb(33, 113, 138)
HSL	hsl(194, 61%, 34%)
HSV	hsv(194, 76%, 54%)
CMYK	cmyk(76.1%, 18.1%, 0%, 45.9%)
CIE-LAB	lab(44.19, -14.89, -20.55)
CIE-LCH	lch(44.19, 25.38, 234.07°)
OKLab	oklab(51.27% -0.0611 -0.0575)
OKLCH	oklch(51.27% 0.084 223.3)
XYZ	xyz(11.1179, 13.9673, 26.1498)
Luminance	0.1397 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21718A #8A3A21

analogous

#218A6E #21718A #213C8A

triadic

#21718A #8A2171 #718A21

tetradic

#21718A #6E218A #8A3A21 #3C8A21

square

#21718A #6E218A #8A3A21 #3C8A21

split-complementary

#21718A #8A213C #8A6E21

monochromatic

#092027 #154959 #21718A #2D99BB #50B6D5

Accessibility & contrast

On white

5.54

#21718A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#21718A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21718A

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21718A	#FFFFFF	#000000	##FFFFFF
##21718A	1.00	5.54	3.79	5.54
#FFFFFF	5.54	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#636E8B

Deuteranopia (green-blind)

#55648A

Tritanopia (blue-blind)

#007979

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #21718a;
/* rgb */ color: rgb(33, 113, 138);
/* oklch */ color: oklch(51.3% 0.084 223.3);

Tailwind

colors: {
  custom: {
    50: '#6d9aac',
    500: '#21718a',
    950: '#000000',
  },
}

SCSS

$custom: #21718a;
$custom-light: #6d9aac;
$custom-dark: #000000;

JSON

{
  "hex": "#21718a",
  "rgb": {
    "r": 33,
    "g": 113,
    "b": 138
  },
  "hsl": {
    "h": 194.286,
    "s": 61.404,
    "l": 33.529
  },
  "oklch": {
    "l": 0.51272,
    "c": 0.08391,
    "h": 223.3
  },
  "luminance": 0.13969
}

Semantic roles & 50–950 ramp

primary

#21718A

secondary

#B9684E

accent

#6A43E5

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #21718A

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

Preview Lab → · Contrast checker → · Palette generator →