#63C1EB#63C1EB

#63C1EB is a light, moderate cyan. Relative luminance 0.468; OKLCH L 77.0% C 0.107 H 229.5°. Best body text is #000000 at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#63C1EB
RGB	rgb(99, 193, 235)
HSL	hsl(199, 77%, 65%)
HSV	hsv(199, 58%, 92%)
CMYK	cmyk(57.9%, 17.9%, 0%, 7.8%)
CIE-LAB	lab(74.05, -15.96, -29.28)
CIE-LCH	lch(74.05, 33.35, 241.40°)
OKLab	oklab(76.97% -0.0697 -0.0816)
OKLCH	oklch(76.97% 0.107 229.5)
XYZ	xyz(39.2052, 46.7870, 85.5459)
Luminance	0.4679 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63C1EB #EB8D63

analogous

#63EBD1 #63C1EB #637DEB

triadic

#63C1EB #EB63C1 #C1EB63

tetradic

#63C1EB #D163EB #EB8D63 #7DEB63

square

#63C1EB #D163EB #EB8D63 #7DEB63

split-complementary

#63C1EB #EB637D #EBD163

monochromatic

#1889BC #2DABE4 #63C1EB #99D7F2 #CFECF9

Accessibility & contrast

On white

2.03

#63C1EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.36

#63C1EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63C1EB

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63C1EB	#FFFFFF	#000000	##000000
##63C1EB	1.00	2.03	10.36	10.36
#FFFFFF	2.03	1.00	21.00	21.00
#000000	10.36	21.00	1.00	1.00
##000000	10.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ACBEED

Deuteranopia (green-blind)

#98B0EA

Tritanopia (blue-blind)

#00CDCF

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #63c1eb;
/* rgb */ color: rgb(99, 193, 235);
/* oklch */ color: oklch(77.0% 0.107 229.5);

Tailwind

colors: {
  custom: {
    50: '#9ad3f1',
    500: '#63c1eb',
    950: '#000000',
  },
}

SCSS

$custom: #63c1eb;
$custom-light: #9ad3f1;
$custom-dark: #000000;

JSON

{
  "hex": "#63c1eb",
  "rgb": {
    "r": 99,
    "g": 193,
    "b": 235
  },
  "hsl": {
    "h": 198.529,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.76968,
    "c": 0.10734,
    "h": 229.5
  },
  "luminance": 0.46791
}

Semantic roles & 50–950 ramp

primary

#63C1EB

secondary

#ECCCBE

accent

#4B0CDA

background

#FAFCFE

surface

#F3F9FD

border

#CDD2D5

text

#0F1416

muted

#7F8284

Preview Lab

Preview with #63C1EB

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

Preview Lab → · Contrast checker → · Palette generator →