#63B5CB#63B5CB

#63B5CB is a light, moderate cyan. Relative luminance 0.400; OKLCH L 72.9% C 0.086 H 217.3°. Best body text is #000000 at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#63B5CB
RGB	rgb(99, 181, 203)
HSL	hsl(193, 50%, 59%)
HSV	hsv(193, 51%, 80%)
CMYK	cmyk(51.2%, 10.8%, 0%, 20.4%)
CIE-LAB	lab(69.48, -18.99, -18.84)
CIE-LCH	lch(69.48, 26.75, 224.77°)
OKLab	oklab(72.94% -0.0684 -0.0521)
OKLCH	oklch(72.94% 0.086 217.3)
XYZ	xyz(32.4448, 40.0094, 62.5012)
Luminance	0.4001 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B5CB #CB7963

analogous

#63CBAD #63B5CB #6381CB

triadic

#63B5CB #CB63B5 #B5CB63

tetradic

#63B5CB #AD63CB #CB7963 #81CB63

square

#63B5CB #AD63CB #CB7963 #81CB63

split-complementary

#63B5CB #CB6381 #CBAD63

monochromatic

#2D7487 #3C9BB5 #63B5CB #91CBDA #BFE1EA

Accessibility & contrast

On white

2.33

#63B5CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.00

#63B5CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B5CB

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B5CB	#FFFFFF	#000000	##000000
##63B5CB	1.00	2.33	9.00	9.00
#FFFFFF	2.33	1.00	21.00	21.00
#000000	9.00	21.00	1.00	1.00
##000000	9.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A6B0CC

Deuteranopia (green-blind)

#97A5CB

Tritanopia (blue-blind)

#20BDBC

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #63b5cb;
/* rgb */ color: rgb(99, 181, 203);
/* oklch */ color: oklch(72.9% 0.086 217.3);

Tailwind

colors: {
  custom: {
    50: '#97cbda',
    500: '#63b5cb',
    950: '#000000',
  },
}

SCSS

$custom: #63b5cb;
$custom-light: #97cbda;
$custom-dark: #000000;

JSON

{
  "hex": "#63b5cb",
  "rgb": {
    "r": 99,
    "g": 181,
    "b": 203
  },
  "hsl": {
    "h": 192.692,
    "s": 50,
    "l": 59.216
  },
  "oklch": {
    "l": 0.72938,
    "c": 0.08599,
    "h": 217.3
  },
  "luminance": 0.40012
}

Semantic roles & 50–950 ramp

primary

#63B5CB

secondary

#D9B9B1

accent

#6C4EDA

background

#F9FCFD

surface

#F2F8FA

border

#CCD1D3

text

#0E1315

muted

#7E8283

Preview Lab

Preview with #63B5CB

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

Preview Lab → · Contrast checker → · Palette generator →