#63B0E5#63B0E5

#63B0E5 is a light, moderate cyan. Relative luminance 0.394; OKLCH L 72.9% C 0.109 H 240.5°. Best body text is #000000 at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#63B0E5
RGB	rgb(99, 176, 229)
HSL	hsl(204, 71%, 64%)
HSV	hsv(204, 57%, 90%)
CMYK	cmyk(56.8%, 23.1%, 0%, 10.2%)
CIE-LAB	lab(69.01, -8.69, -33.81)
CIE-LCH	lch(69.01, 34.91, 255.58°)
OKLab	oklab(72.89% -0.0534 -0.0946)
OKLCH	oklch(72.89% 0.109 240.5)
XYZ	xyz(34.8085, 39.3573, 79.8759)
Luminance	0.3936 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B0E5 #E59863

analogous

#63E5D9 #63B0E5 #636FE5

triadic

#63B0E5 #E563B0 #B0E563

tetradic

#63B0E5 #D963E5 #E59863 #6FE563

square

#63B0E5 #D963E5 #E59863 #6FE563

split-complementary

#63B0E5 #E5636F #E5D963

monochromatic

#1D74B0 #2F95DC #63B0E5 #97CBEE #CCE5F6

Accessibility & contrast

On white

2.37

#63B0E5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.87

#63B0E5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B0E5

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B0E5	#FFFFFF	#000000	##000000
##63B0E5	1.00	2.37	8.87	8.87
#FFFFFF	2.37	1.00	21.00	21.00
#000000	8.87	21.00	1.00	1.00
##000000	8.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98B0E7

Deuteranopia (green-blind)

#87A3E4

Tritanopia (blue-blind)

#00BDC2

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #63b0e5;
/* rgb */ color: rgb(99, 176, 229);
/* oklch */ color: oklch(72.9% 0.109 240.5);

Tailwind

colors: {
  custom: {
    50: '#99c7ed',
    500: '#63b0e5',
    950: '#000000',
  },
}

SCSS

$custom: #63b0e5;
$custom-light: #99c7ed;
$custom-dark: #000000;

JSON

{
  "hex": "#63b0e5",
  "rgb": {
    "r": 99,
    "g": 176,
    "b": 229
  },
  "hsl": {
    "h": 204.462,
    "s": 71.429,
    "l": 64.314
  },
  "oklch": {
    "l": 0.72886,
    "c": 0.10869,
    "h": 240.5
  },
  "luminance": 0.3936
}

Semantic roles & 50–950 ramp

primary

#63B0E5

secondary

#E8CEBB

accent

#6112D3

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #63B0E5

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

Preview Lab → · Contrast checker → · Palette generator →