#21788B#21788B

#21788B is a mid, moderate cyan. Relative luminance 0.156; OKLCH L 53.1% C 0.084 H 215.9°. Best body text is #FFFFFF at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#21788B
RGB	rgb(33, 120, 139)
HSL	hsl(191, 62%, 34%)
HSV	hsv(191, 76%, 55%)
CMYK	cmyk(76.3%, 13.7%, 0%, 45.5%)
CIE-LAB	lab(46.47, -18.42, -17.64)
CIE-LCH	lch(46.47, 25.50, 223.75°)
OKLab	oklab(53.12% -0.068 -0.0492)
OKLCH	oklch(53.12% 0.084 215.9)
XYZ	xyz(12.0019, 15.6189, 26.8033)
Luminance	0.1562 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21788B #8B3421

analogous

#218B69 #21788B #21438B

triadic

#21788B #8B2178 #788B21

tetradic

#21788B #69218B #8B3421 #438B21

square

#21788B #69218B #8B3421 #438B21

split-complementary

#21788B #8B2143 #8B6921

monochromatic

#0A2328 #154D5A #21788B #2DA3BC #51BED6

Accessibility & contrast

On white

5.09

#21788B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#21788B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21788B

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21788B	#FFFFFF	#000000	##FFFFFF
##21788B	1.00	5.09	4.12	5.09
#FFFFFF	5.09	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B748C

Deuteranopia (green-blind)

#5D6A8B

Tritanopia (blue-blind)

#007F7E

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #21788b;
/* rgb */ color: rgb(33, 120, 139);
/* oklch */ color: oklch(53.1% 0.084 215.9);

Tailwind

colors: {
  custom: {
    50: '#6e9fad',
    500: '#21788b',
    950: '#000000',
  },
}

SCSS

$custom: #21788b;
$custom-light: #6e9fad;
$custom-dark: #000000;

JSON

{
  "hex": "#21788b",
  "rgb": {
    "r": 33,
    "g": 120,
    "b": 139
  },
  "hsl": {
    "h": 190.755,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.5312,
    "c": 0.08394,
    "h": 215.9
  },
  "luminance": 0.1562
}

Semantic roles & 50–950 ramp

primary

#21788B

secondary

#B9624F

accent

#6043E5

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #21788B

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

Preview Lab → · Contrast checker → · Palette generator →