#63B3E8#63B3E8

#63B3E8 is a light, moderate cyan. Relative luminance 0.407; OKLCH L 73.7% C 0.110 H 239.6°. Best body text is #000000 at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#63B3E8
RGB	rgb(99, 179, 232)
HSL	hsl(204, 74%, 65%)
HSV	hsv(204, 57%, 91%)
CMYK	cmyk(57.3%, 22.8%, 0%, 9%)
CIE-LAB	lab(69.98, -9.41, -33.95)
CIE-LCH	lch(69.98, 35.23, 254.51°)
OKLab	oklab(73.69% -0.0557 -0.095)
OKLCH	oklch(73.69% 0.11 239.6)
XYZ	xyz(35.8258, 40.7158, 82.2992)
Luminance	0.4072 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B3E8 #E89863

analogous

#63E8DB #63B3E8 #6370E8

triadic

#63B3E8 #E863B3 #B3E863

tetradic

#63B3E8 #DB63E8 #E89863 #70E863

square

#63B3E8 #DB63E8 #E89863 #70E863

split-complementary

#63B3E8 #E86370 #E8DB63

monochromatic

#1B78B6 #2E99E0 #63B3E8 #98CDF0 #CEE7F8

Accessibility & contrast

On white

2.30

#63B3E8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.14

#63B3E8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B3E8

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B3E8	#FFFFFF	#000000	##000000
##63B3E8	1.00	2.30	9.14	9.14
#FFFFFF	2.30	1.00	21.00	21.00
#000000	9.14	21.00	1.00	1.00
##000000	9.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9BB3EA

Deuteranopia (green-blind)

#89A5E7

Tritanopia (blue-blind)

#00C0C5

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #63b3e8;
/* rgb */ color: rgb(99, 179, 232);
/* oklch */ color: oklch(73.7% 0.110 239.6);

Tailwind

colors: {
  custom: {
    50: '#99c9ef',
    500: '#63b3e8',
    950: '#000000',
  },
}

SCSS

$custom: #63b3e8;
$custom-light: #99c9ef;
$custom-dark: #000000;

JSON

{
  "hex": "#63b3e8",
  "rgb": {
    "r": 99,
    "g": 179,
    "b": 232
  },
  "hsl": {
    "h": 203.91,
    "s": 74.302,
    "l": 64.902
  },
  "oklch": {
    "l": 0.73691,
    "c": 0.11016,
    "h": 239.6
  },
  "luminance": 0.40719
}

Semantic roles & 50–950 ramp

primary

#63B3E8

secondary

#EACFBD

accent

#5F0FD6

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #63B3E8

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

Preview Lab → · Contrast checker → · Palette generator →