#63C0EC#63C0EC

#63C0EC is a light, moderate cyan. Relative luminance 0.464; OKLCH L 76.8% C 0.108 H 231.0°. Best body text is #000000 at 10.28:1 contrast (WCAG AA passes).

Color values

HEX	#63C0EC
RGB	rgb(99, 192, 236)
HSL	hsl(199, 78%, 66%)
HSV	hsv(199, 58%, 93%)
CMYK	cmyk(58.1%, 18.6%, 0%, 7.5%)
CIE-LAB	lab(73.81, -15.14, -30.20)
CIE-LCH	lch(73.81, 33.79, 243.37°)
OKLab	oklab(76.78% -0.0683 -0.0843)
OKLCH	oklch(76.78% 0.108 231)
XYZ	xyz(39.1298, 46.4043, 86.2354)
Luminance	0.4641 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63C0EC #EC8F63

analogous

#63ECD3 #63C0EC #637BEC

triadic

#63C0EC #EC63C0 #C0EC63

tetradic

#63C0EC #D363EC #EC8F63 #7BEC63

square

#63C0EC #D363EC #EC8F63 #7BEC63

split-complementary

#63C0EC #EC637B #ECD363

monochromatic

#1788BE #2CAAE5 #63C0EC #9AD6F3 #D0ECF9

Accessibility & contrast

On white

2.04

#63C0EC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.28

#63C0EC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63C0EC

10.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63C0EC	#FFFFFF	#000000	##000000
##63C0EC	1.00	2.04	10.28	10.28
#FFFFFF	2.04	1.00	21.00	21.00
#000000	10.28	21.00	1.00	1.00
##000000	10.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AABEEE

Deuteranopia (green-blind)

#97AFEB

Tritanopia (blue-blind)

#00CCCE

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #63c0ec;
/* rgb */ color: rgb(99, 192, 236);
/* oklch */ color: oklch(76.8% 0.108 231.0);

Tailwind

colors: {
  custom: {
    50: '#9ad3f2',
    500: '#63c0ec',
    950: '#000000',
  },
}

SCSS

$custom: #63c0ec;
$custom-light: #9ad3f2;
$custom-dark: #000000;

JSON

{
  "hex": "#63c0ec",
  "rgb": {
    "r": 99,
    "g": 192,
    "b": 236
  },
  "hsl": {
    "h": 199.27,
    "s": 78.286,
    "l": 65.686
  },
  "oklch": {
    "l": 0.76784,
    "c": 0.10846,
    "h": 231
  },
  "luminance": 0.46408
}

Semantic roles & 50–950 ramp

primary

#63C0EC

secondary

#ECCDBF

accent

#4E0BDB

background

#FAFCFE

surface

#F3F9FD

border

#CDD2D5

text

#0F1417

muted

#7F8285

Preview Lab

Preview with #63C0EC

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

Preview Lab → · Contrast checker → · Palette generator →