#21758B#21758B

#21758B is a mid, moderate cyan. Relative luminance 0.149; OKLCH L 52.3% C 0.084 H 219.5°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#21758B
RGB	rgb(33, 117, 139)
HSL	hsl(192, 62%, 34%)
HSV	hsv(192, 76%, 55%)
CMYK	cmyk(76.3%, 15.8%, 0%, 45.5%)
CIE-LAB	lab(45.51, -16.78, -19.11)
CIE-LCH	lch(45.51, 25.43, 228.72°)
OKLab	oklab(52.35% -0.0649 -0.0534)
OKLCH	oklch(52.35% 0.084 219.5)
XYZ	xyz(11.6467, 14.9086, 26.6849)
Luminance	0.1491 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21758B #8B3721

analogous

#218B6C #21758B #21408B

triadic

#21758B #8B2175 #758B21

tetradic

#21758B #6C218B #8B3721 #408B21

square

#21758B #6C218B #8B3721 #408B21

split-complementary

#21758B #8B2140 #8B6C21

monochromatic

#0A2228 #154B5A #21758B #2D9FBC #51BAD6

Accessibility & contrast

On white

5.27

#21758B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.98

#21758B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21758B

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21758B	#FFFFFF	#000000	##FFFFFF
##21758B	1.00	5.27	3.98	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.98	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#67728C

Deuteranopia (green-blind)

#59678B

Tritanopia (blue-blind)

#007C7C

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #21758b;
/* rgb */ color: rgb(33, 117, 139);
/* oklch */ color: oklch(52.3% 0.084 219.5);

Tailwind

colors: {
  custom: {
    50: '#6d9dad',
    500: '#21758b',
    950: '#000000',
  },
}

SCSS

$custom: #21758b;
$custom-light: #6d9dad;
$custom-dark: #000000;

JSON

{
  "hex": "#21758b",
  "rgb": {
    "r": 33,
    "g": 117,
    "b": 139
  },
  "hsl": {
    "h": 192.453,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.52347,
    "c": 0.08401,
    "h": 219.5
  },
  "luminance": 0.1491
}

Semantic roles & 50–950 ramp

primary

#21758B

secondary

#B9654F

accent

#6543E5

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #21758B

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

Preview Lab → · Contrast checker → · Palette generator →