#63B4E6#63B4E6

#63B4E6 is a light, moderate cyan. Relative luminance 0.410; OKLCH L 73.8% C 0.108 H 237.7°. Best body text is #000000 at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#63B4E6
RGB	rgb(99, 180, 230)
HSL	hsl(203, 72%, 65%)
HSV	hsv(203, 57%, 90%)
CMYK	cmyk(57%, 21.7%, 0%, 9.8%)
CIE-LAB	lab(70.18, -10.56, -32.54)
CIE-LCH	lch(70.18, 34.21, 252.03°)
OKLab	oklab(73.83% -0.0575 -0.091)
OKLCH	oklch(73.83% 0.108 237.7)
XYZ	xyz(35.7444, 41.0051, 80.8787)
Luminance	0.4101 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B4E6 #E69563

analogous

#63E6D7 #63B4E6 #6373E6

triadic

#63B4E6 #E663B4 #B4E663

tetradic

#63B4E6 #D763E6 #E69563 #73E663

square

#63B4E6 #D763E6 #E69563 #73E663

split-complementary

#63B4E6 #E66373 #E6D763

monochromatic

#1D79B2 #2E9BDE #63B4E6 #98CDEE #CCE7F7

Accessibility & contrast

On white

2.28

#63B4E6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.20

#63B4E6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B4E6

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B4E6	#FFFFFF	#000000	##000000
##63B4E6	1.00	2.28	9.20	9.20
#FFFFFF	2.28	1.00	21.00	21.00
#000000	9.20	21.00	1.00	1.00
##000000	9.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DB3E8

Deuteranopia (green-blind)

#8BA6E5

Tritanopia (blue-blind)

#00C1C5

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #63b4e6;
/* rgb */ color: rgb(99, 180, 230);
/* oklch */ color: oklch(73.8% 0.108 237.7);

Tailwind

colors: {
  custom: {
    50: '#99caee',
    500: '#63b4e6',
    950: '#000000',
  },
}

SCSS

$custom: #63b4e6;
$custom-light: #99caee;
$custom-dark: #000000;

JSON

{
  "hex": "#63b4e6",
  "rgb": {
    "r": 99,
    "g": 180,
    "b": 230
  },
  "hsl": {
    "h": 202.901,
    "s": 72.376,
    "l": 64.51
  },
  "oklch": {
    "l": 0.73826,
    "c": 0.10762,
    "h": 237.7
  },
  "luminance": 0.41008
}

Semantic roles & 50–950 ramp

primary

#63B4E6

secondary

#E9CDBC

accent

#5C11D4

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #63B4E6

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

Preview Lab → · Contrast checker → · Palette generator →