#21718B#21718B

#21718B is a mid, moderate cyan. Relative luminance 0.140; OKLCH L 51.3% C 0.085 H 224.2°. Best body text is #FFFFFF at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#21718B
RGB	rgb(33, 113, 139)
HSL	hsl(195, 62%, 34%)
HSV	hsv(195, 76%, 55%)
CMYK	cmyk(76.3%, 18.7%, 0%, 45.5%)
CIE-LAB	lab(44.23, -14.54, -21.08)
CIE-LCH	lch(44.23, 25.61, 235.40°)
OKLab	oklab(51.32% -0.0607 -0.059)
OKLCH	oklch(51.32% 0.085 224.2)
XYZ	xyz(11.1906, 13.9963, 26.5329)
Luminance	0.1400 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21718B #8B3B21

analogous

#218B70 #21718B #213C8B

triadic

#21718B #8B2171 #718B21

tetradic

#21718B #70218B #8B3B21 #3C8B21

square

#21718B #70218B #8B3B21 #3C8B21

split-complementary

#21718B #8B213C #8B7021

monochromatic

#0A2128 #15495A #21718B #2D99BC #51B5D6

Accessibility & contrast

On white

5.53

#21718B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#21718B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21718B

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21718B	#FFFFFF	#000000	##FFFFFF
##21718B	1.00	5.53	3.80	5.53
#FFFFFF	5.53	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#626E8C

Deuteranopia (green-blind)

#54648B

Tritanopia (blue-blind)

#007979

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #21718b;
/* rgb */ color: rgb(33, 113, 139);
/* oklch */ color: oklch(51.3% 0.085 224.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#21718b",
  "rgb": {
    "r": 33,
    "g": 113,
    "b": 139
  },
  "hsl": {
    "h": 194.717,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.51319,
    "c": 0.08468,
    "h": 224.2
  },
  "luminance": 0.13998
}

Semantic roles & 50–950 ramp

primary

#21718B

secondary

#B9694F

accent

#6B43E5

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #21718B

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

Preview Lab → · Contrast checker → · Palette generator →