#63C4EE#63C4EE

#63C4EE is a light, moderate cyan. Relative luminance 0.483; OKLCH L 77.8% C 0.109 H 228.8°. Best body text is #000000 at 10.66:1 contrast (WCAG AA passes).

Color values

HEX	#63C4EE
RGB	rgb(99, 196, 238)
HSL	hsl(198, 80%, 66%)
HSV	hsv(198, 58%, 93%)
CMYK	cmyk(58.4%, 17.6%, 0%, 6.7%)
CIE-LAB	lab(75.01, -16.64, -29.42)
CIE-LCH	lch(75.01, 33.80, 240.51°)
OKLab	oklab(77.77% -0.0718 -0.082)
OKLCH	oklch(77.77% 0.109 228.8)
XYZ	xyz(40.3122, 48.3017, 88.0711)
Luminance	0.4831 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63C4EE #EE8D63

analogous

#63EED2 #63C4EE #637EEE

triadic

#63C4EE #EE63C4 #C4EE63

tetradic

#63C4EE #D263EE #EE8D63 #7EEE63

square

#63C4EE #D263EE #EE8D63 #7EEE63

split-complementary

#63C4EE #EE637E #EED263

monochromatic

#158DC2 #2CAFE8 #63C4EE #9AD9F4 #D1EEFA

Accessibility & contrast

On white

1.97

#63C4EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.66

#63C4EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63C4EE

10.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63C4EE	#FFFFFF	#000000	##000000
##63C4EE	1.00	1.97	10.66	10.66
#FFFFFF	1.97	1.00	21.00	21.00
#000000	10.66	21.00	1.00	1.00
##000000	10.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AEC1F0

Deuteranopia (green-blind)

#9BB2ED

Tritanopia (blue-blind)

#00D0D2

Achromatopsia (no color)

#B9B9B9

Design tokens & code

CSS

--color: #63c4ee;
/* rgb */ color: rgb(99, 196, 238);
/* oklch */ color: oklch(77.8% 0.109 228.8);

Tailwind

colors: {
  custom: {
    50: '#9ad6f3',
    500: '#63c4ee',
    950: '#000000',
  },
}

SCSS

$custom: #63c4ee;
$custom-light: #9ad6f3;
$custom-dark: #000000;

JSON

{
  "hex": "#63c4ee",
  "rgb": {
    "r": 99,
    "g": 196,
    "b": 238
  },
  "hsl": {
    "h": 198.129,
    "s": 80.347,
    "l": 66.078
  },
  "oklch": {
    "l": 0.7777,
    "c": 0.10903,
    "h": 228.8
  },
  "luminance": 0.48306
}

Semantic roles & 50–950 ramp

primary

#63C4EE

secondary

#EDCDC0

accent

#4909DD

background

#FAFDFE

surface

#F4FAFD

border

#CED3D5

text

#0F1417

muted

#7F8385

Preview Lab

Preview with #63C4EE

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

Preview Lab → · Contrast checker → · Palette generator →