#21738D#21738D

#21738D is a mid, moderate cyan. Relative luminance 0.145; OKLCH L 51.9% C 0.086 H 223.7°. Best body text is #FFFFFF at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#21738D
RGB	rgb(33, 115, 141)
HSL	hsl(194, 62%, 34%)
HSV	hsv(194, 77%, 55%)
CMYK	cmyk(76.6%, 18.4%, 0%, 44.7%)
CIE-LAB	lab(44.95, -14.96, -21.16)
CIE-LCH	lch(44.95, 25.91, 234.73°)
OKLab	oklab(51.93% -0.062 -0.0592)
OKLCH	oklch(51.93% 0.086 223.7)
XYZ	xyz(11.5637, 14.5065, 27.3847)
Luminance	0.1451 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21738D #8D3B21

analogous

#218D71 #21738D #213D8D

triadic

#21738D #8D2173 #738D21

tetradic

#21738D #71218D #8D3B21 #3D8D21

square

#21738D #71218D #8D3B21 #3D8D21

split-complementary

#21738D #8D213D #8D7121

monochromatic

#0A222A #154B5B #21738D #2D9BBF #52B7D6

Accessibility & contrast

On white

5.38

#21738D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.90

#21738D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21738D

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21738D	#FFFFFF	#000000	##FFFFFF
##21738D	1.00	5.38	3.90	5.38
#FFFFFF	5.38	1.00	21.00	1.00
#000000	3.90	21.00	1.00	21.00
##FFFFFF	5.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#64708E

Deuteranopia (green-blind)

#56668D

Tritanopia (blue-blind)

#007B7B

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #21738d;
/* rgb */ color: rgb(33, 115, 141);
/* oklch */ color: oklch(51.9% 0.086 223.7);

Tailwind

colors: {
  custom: {
    50: '#6d9bae',
    500: '#21738d',
    950: '#000000',
  },
}

SCSS

$custom: #21738d;
$custom-light: #6d9bae;
$custom-dark: #000000;

JSON

{
  "hex": "#21738d",
  "rgb": {
    "r": 33,
    "g": 115,
    "b": 141
  },
  "hsl": {
    "h": 194.444,
    "s": 62.069,
    "l": 34.118
  },
  "oklch": {
    "l": 0.51926,
    "c": 0.08573,
    "h": 223.7
  },
  "luminance": 0.14508
}

Semantic roles & 50–950 ramp

primary

#21738D

secondary

#BA6950

accent

#6A43E5

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #21738D

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

Preview Lab → · Contrast checker → · Palette generator →