#63C3EE#63C3EE

#63C3EE is a light, moderate cyan. Relative luminance 0.479; OKLCH L 77.5% C 0.109 H 229.7°. Best body text is #000000 at 10.57:1 contrast (WCAG AA passes).

Color values

HEX	#63C3EE
RGB	rgb(99, 195, 238)
HSL	hsl(199, 80%, 66%)
HSV	hsv(199, 58%, 93%)
CMYK	cmyk(58.4%, 18.1%, 0%, 6.7%)
CIE-LAB	lab(74.73, -16.12, -29.86)
CIE-LCH	lch(74.73, 33.93, 241.64°)
OKLab	oklab(77.55% -0.0707 -0.0833)
OKLCH	oklch(77.55% 0.109 229.7)
XYZ	xyz(40.0874, 47.8521, 87.9961)
Luminance	0.4786 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63C3EE #EE8E63

analogous

#63EED3 #63C3EE #637DEE

triadic

#63C3EE #EE63C3 #C3EE63

tetradic

#63C3EE #D363EE #EE8E63 #7DEE63

square

#63C3EE #D363EE #EE8E63 #7DEE63

split-complementary

#63C3EE #EE637D #EED363

monochromatic

#158CC2 #2CAEE8 #63C3EE #9AD8F4 #D1EDFA

Accessibility & contrast

On white

1.99

#63C3EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.57

#63C3EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63C3EE

10.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63C3EE	#FFFFFF	#000000	##000000
##63C3EE	1.00	1.99	10.57	10.57
#FFFFFF	1.99	1.00	21.00	21.00
#000000	10.57	21.00	1.00	1.00
##000000	10.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ADC0F0

Deuteranopia (green-blind)

#99B2ED

Tritanopia (blue-blind)

#00CFD1

Achromatopsia (no color)

#B8B8B8

Design tokens & code

CSS

--color: #63c3ee;
/* rgb */ color: rgb(99, 195, 238);
/* oklch */ color: oklch(77.5% 0.109 229.7);

Tailwind

colors: {
  custom: {
    50: '#9ad5f3',
    500: '#63c3ee',
    950: '#000000',
  },
}

SCSS

$custom: #63c3ee;
$custom-light: #9ad5f3;
$custom-dark: #000000;

JSON

{
  "hex": "#63c3ee",
  "rgb": {
    "r": 99,
    "g": 195,
    "b": 238
  },
  "hsl": {
    "h": 198.561,
    "s": 80.347,
    "l": 66.078
  },
  "oklch": {
    "l": 0.77545,
    "c": 0.10928,
    "h": 229.7
  },
  "luminance": 0.47856
}

Semantic roles & 50–950 ramp

primary

#63C3EE

secondary

#EDCEC0

accent

#4A09DD

background

#FAFDFE

surface

#F4FAFD

border

#CED3D5

text

#0F1417

muted

#7F8385

Preview Lab

Preview with #63C3EE

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

Preview Lab → · Contrast checker → · Palette generator →