#21718C#21718C

#21718C is a mid, moderate cyan. Relative luminance 0.140; OKLCH L 51.4% C 0.085 H 225.1°. Best body text is #FFFFFF at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#21718C
RGB	rgb(33, 113, 140)
HSL	hsl(195, 62%, 34%)
HSV	hsv(195, 76%, 55%)
CMYK	cmyk(76.4%, 19.3%, 0%, 45.1%)
CIE-LAB	lab(44.27, -14.19, -21.61)
CIE-LCH	lch(44.27, 25.85, 236.72°)
OKLab	oklab(51.37% -0.0603 -0.0606)
OKLCH	oklch(51.37% 0.085 225.1)
XYZ	xyz(11.2640, 14.0257, 26.9194)
Luminance	0.1403 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21718C #8C3C21

analogous

#218C72 #21718C #213C8C

triadic

#21718C #8C2171 #718C21

tetradic

#21718C #72218C #8C3C21 #3C8C21

square

#21718C #72218C #8C3C21 #3C8C21

split-complementary

#21718C #8C213C #8C7221

monochromatic

#0A2129 #15495A #21718C #2D99BE #51B5D6

Accessibility & contrast

On white

5.52

#21718C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#21718C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21718C

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21718C	#FFFFFF	#000000	##FFFFFF
##21718C	1.00	5.52	3.81	5.52
#FFFFFF	5.52	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#626F8D

Deuteranopia (green-blind)

#54648C

Tritanopia (blue-blind)

#00797A

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #21718c;
/* rgb */ color: rgb(33, 113, 140);
/* oklch */ color: oklch(51.4% 0.085 225.1);

Tailwind

colors: {
  custom: {
    50: '#6d9aad',
    500: '#21718c',
    950: '#000000',
  },
}

SCSS

$custom: #21718c;
$custom-light: #6d9aad;
$custom-dark: #000000;

JSON

{
  "hex": "#21718c",
  "rgb": {
    "r": 33,
    "g": 113,
    "b": 140
  },
  "hsl": {
    "h": 195.14,
    "s": 61.85,
    "l": 33.922
  },
  "oklch": {
    "l": 0.51367,
    "c": 0.08546,
    "h": 225.1
  },
  "luminance": 0.14027
}

Semantic roles & 50–950 ramp

primary

#21718C

secondary

#B96A4F

accent

#6C43E5

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #21718C

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

Preview Lab → · Contrast checker → · Palette generator →