#63BCE9#63BCE9

#63BCE9 is a light, moderate cyan. Relative luminance 0.445; OKLCH L 75.8% C 0.107 H 232.6°. Best body text is #000000 at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#63BCE9
RGB	rgb(99, 188, 233)
HSL	hsl(200, 75%, 65%)
HSV	hsv(200, 58%, 91%)
CMYK	cmyk(57.5%, 19.3%, 0%, 8.6%)
CIE-LAB	lab(72.56, -13.93, -30.50)
CIE-LCH	lch(72.56, 33.53, 245.45°)
OKLab	oklab(75.76% -0.0651 -0.0851)
OKLCH	oklch(75.76% 0.107 232.6)
XYZ	xyz(37.8312, 44.4987, 83.6704)
Luminance	0.4450 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63BCE9 #E99063

analogous

#63E9D3 #63BCE9 #6379E9

triadic

#63BCE9 #E963BC #BCE963

tetradic

#63BCE9 #D363E9 #E99063 #79E963

square

#63BCE9 #D363E9 #E99063 #79E963

split-complementary

#63BCE9 #E96379 #E9D363

monochromatic

#1A83B8 #2DA5E1 #63BCE9 #99D3F1 #CEEAF8

Accessibility & contrast

On white

2.12

#63BCE9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.90

#63BCE9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BCE9

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63BCE9	#FFFFFF	#000000	##000000
##63BCE9	1.00	2.12	9.90	9.90
#FFFFFF	2.12	1.00	21.00	21.00
#000000	9.90	21.00	1.00	1.00
##000000	9.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A6BAEB

Deuteranopia (green-blind)

#93ACE8

Tritanopia (blue-blind)

#00C8CB

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #63bce9;
/* rgb */ color: rgb(99, 188, 233);
/* oklch */ color: oklch(75.8% 0.107 232.6);

Tailwind

colors: {
  custom: {
    50: '#9ad0f0',
    500: '#63bce9',
    950: '#000000',
  },
}

SCSS

$custom: #63bce9;
$custom-light: #9ad0f0;
$custom-dark: #000000;

JSON

{
  "hex": "#63bce9",
  "rgb": {
    "r": 99,
    "g": 188,
    "b": 233
  },
  "hsl": {
    "h": 200.149,
    "s": 75.281,
    "l": 65.098
  },
  "oklch": {
    "l": 0.75755,
    "c": 0.10714,
    "h": 232.6
  },
  "luminance": 0.44502
}

Semantic roles & 50–950 ramp

primary

#63BCE9

secondary

#EBCCBD

accent

#520ED7

background

#FAFCFE

surface

#F3F9FD

border

#CDD2D5

text

#0F1416

muted

#7F8284

Preview Lab

Preview with #63BCE9

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

Preview Lab → · Contrast checker → · Palette generator →