#63B3E6#63B3E6

#63B3E6 is a light, moderate cyan. Relative luminance 0.406; OKLCH L 73.6% C 0.108 H 238.6°. Best body text is #000000 at 9.12:1 contrast (WCAG AA passes).

Color values

HEX	#63B3E6
RGB	rgb(99, 179, 230)
HSL	hsl(203, 72%, 65%)
HSV	hsv(203, 57%, 90%)
CMYK	cmyk(57%, 22.2%, 0%, 9.8%)
CIE-LAB	lab(69.90, -10.02, -32.98)
CIE-LCH	lch(69.90, 34.47, 253.10°)
OKLab	oklab(73.6% -0.0564 -0.0922)
OKLCH	oklch(73.6% 0.108 238.6)
XYZ	xyz(35.5433, 40.6028, 80.8116)
Luminance	0.4061 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B3E6 #E69663

analogous

#63E6D8 #63B3E6 #6372E6

triadic

#63B3E6 #E663B3 #B3E663

tetradic

#63B3E6 #D863E6 #E69663 #72E663

square

#63B3E6 #D863E6 #E69663 #72E663

split-complementary

#63B3E6 #E66372 #E6D863

monochromatic

#1D78B2 #2E99DE #63B3E6 #98CDEE #CCE6F7

Accessibility & contrast

On white

2.30

#63B3E6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.12

#63B3E6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B3E6

9.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B3E6	#FFFFFF	#000000	##000000
##63B3E6	1.00	2.30	9.12	9.12
#FFFFFF	2.30	1.00	21.00	21.00
#000000	9.12	21.00	1.00	1.00
##000000	9.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9CB2E8

Deuteranopia (green-blind)

#8AA5E5

Tritanopia (blue-blind)

#00C0C4

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #63b3e6;
/* rgb */ color: rgb(99, 179, 230);
/* oklch */ color: oklch(73.6% 0.108 238.6);

Tailwind

colors: {
  custom: {
    50: '#99c9ee',
    500: '#63b3e6',
    950: '#000000',
  },
}

SCSS

$custom: #63b3e6;
$custom-light: #99c9ee;
$custom-dark: #000000;

JSON

{
  "hex": "#63b3e6",
  "rgb": {
    "r": 99,
    "g": 179,
    "b": 230
  },
  "hsl": {
    "h": 203.359,
    "s": 72.376,
    "l": 64.51
  },
  "oklch": {
    "l": 0.73602,
    "c": 0.10811,
    "h": 238.6
  },
  "luminance": 0.40606
}

Semantic roles & 50–950 ramp

primary

#63B3E6

secondary

#E9CDBC

accent

#5D11D4

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #63B3E6

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

Preview Lab → · Contrast checker → · Palette generator →