#63ADE4#63ADE4

#63ADE4 is a light, moderate cyan. Relative luminance 0.381; OKLCH L 72.2% C 0.109 H 242.5°. Best body text is #000000 at 8.63:1 contrast (WCAG AA passes).

Color values

HEX	#63ADE4
RGB	rgb(99, 173, 228)
HSL	hsl(206, 70%, 64%)
HSV	hsv(206, 57%, 89%)
CMYK	cmyk(56.6%, 24.1%, 0%, 10.6%)
CIE-LAB	lab(68.12, -7.36, -34.64)
CIE-LCH	lch(68.12, 35.41, 258.01°)
OKLab	oklab(72.17% -0.0505 -0.097)
OKLCH	oklch(72.17% 0.109 242.5)
XYZ	xyz(34.0876, 38.1382, 78.9488)
Luminance	0.3814 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63ADE4 #E49A63

analogous

#63E4DA #63ADE4 #636DE4

triadic

#63ADE4 #E463AD #ADE463

tetradic

#63ADE4 #DA63E4 #E49A63 #6DE463

square

#63ADE4 #DA63E4 #E49A63 #6DE463

split-complementary

#63ADE4 #E4636D #E4DA63

monochromatic

#1E71AE #2F92DB #63ADE4 #97C8ED #CBE4F6

Accessibility & contrast

On white

2.43

#63ADE4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.63

#63ADE4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63ADE4

8.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63ADE4	#FFFFFF	#000000	##000000
##63ADE4	1.00	2.43	8.63	8.63
#FFFFFF	2.43	1.00	21.00	21.00
#000000	8.63	21.00	1.00	1.00
##000000	8.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95ADE7

Deuteranopia (green-blind)

#83A0E3

Tritanopia (blue-blind)

#00BAC0

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #63ade4;
/* rgb */ color: rgb(99, 173, 228);
/* oklch */ color: oklch(72.2% 0.109 242.5);

Tailwind

colors: {
  custom: {
    50: '#99c5ec',
    500: '#63ade4',
    950: '#000000',
  },
}

SCSS

$custom: #63ade4;
$custom-light: #99c5ec;
$custom-dark: #000000;

JSON

{
  "hex": "#63ade4",
  "rgb": {
    "r": 99,
    "g": 173,
    "b": 228
  },
  "hsl": {
    "h": 205.581,
    "s": 70.492,
    "l": 64.118
  },
  "oklch": {
    "l": 0.72171,
    "c": 0.1094,
    "h": 242.5
  },
  "luminance": 0.38141
}

Semantic roles & 50–950 ramp

primary

#63ADE4

secondary

#E8CEBB

accent

#6513D3

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1216

muted

#7E8184

Preview Lab

Preview with #63ADE4

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

Preview Lab → · Contrast checker → · Palette generator →