#63B9E8#63B9E8

#63B9E8 is a light, moderate cyan. Relative luminance 0.432; OKLCH L 75.0% C 0.107 H 234.6°. Best body text is #000000 at 9.64:1 contrast (WCAG AA passes).

Color values

HEX	#63B9E8
RGB	rgb(99, 185, 232)
HSL	hsl(201, 74%, 65%)
HSV	hsv(201, 57%, 91%)
CMYK	cmyk(57.3%, 20.3%, 0%, 9%)
CIE-LAB	lab(71.67, -12.64, -31.33)
CIE-LCH	lch(71.67, 33.78, 248.03°)
OKLab	oklab(75.04% -0.0622 -0.0875)
OKLCH	oklch(75.04% 0.107 234.6)
XYZ	xyz(37.0545, 43.1733, 82.7088)
Luminance	0.4318 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B9E8 #E89263

analogous

#63E8D5 #63B9E8 #6376E8

triadic

#63B9E8 #E863B9 #B9E863

tetradic

#63B9E8 #D563E8 #E89263 #76E863

square

#63B9E8 #D563E8 #E89263 #76E863

split-complementary

#63B9E8 #E86376 #E8D563

monochromatic

#1B7FB6 #2EA1E0 #63B9E8 #98D1F0 #CEE9F8

Accessibility & contrast

On white

2.18

#63B9E8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.64

#63B9E8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B9E8

9.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B9E8	#FFFFFF	#000000	##000000
##63B9E8	1.00	2.18	9.64	9.64
#FFFFFF	2.18	1.00	21.00	21.00
#000000	9.64	21.00	1.00	1.00
##000000	9.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A3B7EA

Deuteranopia (green-blind)

#90AAE7

Tritanopia (blue-blind)

#00C5C9

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #63b9e8;
/* rgb */ color: rgb(99, 185, 232);
/* oklch */ color: oklch(75.0% 0.107 234.6);

Tailwind

colors: {
  custom: {
    50: '#99ceef',
    500: '#63b9e8',
    950: '#000000',
  },
}

SCSS

$custom: #63b9e8;
$custom-light: #99ceef;
$custom-dark: #000000;

JSON

{
  "hex": "#63b9e8",
  "rgb": {
    "r": 99,
    "g": 185,
    "b": 232
  },
  "hsl": {
    "h": 201.203,
    "s": 74.302,
    "l": 64.902
  },
  "oklch": {
    "l": 0.75036,
    "c": 0.10734,
    "h": 234.6
  },
  "luminance": 0.43177
}

Semantic roles & 50–950 ramp

primary

#63B9E8

secondary

#EACDBD

accent

#560FD6

background

#FAFCFE

surface

#F3F9FD

border

#CDD2D5

text

#0F1316

muted

#7F8284

Preview Lab

Preview with #63B9E8

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

Preview Lab → · Contrast checker → · Palette generator →