#21778B#21778B

#21778B is a mid, moderate cyan. Relative luminance 0.154; OKLCH L 52.9% C 0.084 H 217.1°. Best body text is #FFFFFF at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#21778B
RGB	rgb(33, 119, 139)
HSL	hsl(191, 62%, 34%)
HSV	hsv(191, 76%, 55%)
CMYK	cmyk(76.3%, 14.4%, 0%, 45.5%)
CIE-LAB	lab(46.15, -17.88, -18.13)
CIE-LCH	lch(46.15, 25.46, 225.40°)
OKLab	oklab(52.86% -0.0669 -0.0506)
OKLCH	oklch(52.86% 0.084 217.1)
XYZ	xyz(11.8823, 15.3796, 26.7634)
Luminance	0.1538 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21778B #8B3521

analogous

#218B6A #21778B #21428B

triadic

#21778B #8B2177 #778B21

tetradic

#21778B #6A218B #8B3521 #428B21

square

#21778B #6A218B #8B3521 #428B21

split-complementary

#21778B #8B2142 #8B6A21

monochromatic

#0A2228 #154D5A #21778B #2DA1BC #51BDD6

Accessibility & contrast

On white

5.15

#21778B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.08

#21778B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21778B

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21778B	#FFFFFF	#000000	##FFFFFF
##21778B	1.00	5.15	4.08	5.15
#FFFFFF	5.15	1.00	21.00	1.00
#000000	4.08	21.00	1.00	21.00
##FFFFFF	5.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A738C

Deuteranopia (green-blind)

#5B698B

Tritanopia (blue-blind)

#007E7D

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #21778b;
/* rgb */ color: rgb(33, 119, 139);
/* oklch */ color: oklch(52.9% 0.084 217.1);

Tailwind

colors: {
  custom: {
    50: '#6e9ead',
    500: '#21778b',
    950: '#000000',
  },
}

SCSS

$custom: #21778b;
$custom-light: #6e9ead;
$custom-dark: #000000;

JSON

{
  "hex": "#21778b",
  "rgb": {
    "r": 33,
    "g": 119,
    "b": 139
  },
  "hsl": {
    "h": 191.321,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.52862,
    "c": 0.08392,
    "h": 217.1
  },
  "luminance": 0.15381
}

Semantic roles & 50–950 ramp

primary

#21778B

secondary

#B9634F

accent

#6243E5

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #21778B

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

Preview Lab → · Contrast checker → · Palette generator →