#63B0E4#63B0E4

#63B0E4 is a light, moderate cyan. Relative luminance 0.393; OKLCH L 72.8% C 0.108 H 240.0°. Best body text is #000000 at 8.86:1 contrast (WCAG AA passes).

Color values

HEX	#63B0E4
RGB	rgb(99, 176, 228)
HSL	hsl(204, 70%, 64%)
HSV	hsv(204, 57%, 89%)
CMYK	cmyk(56.6%, 22.8%, 0%, 10.6%)
CIE-LAB	lab(68.97, -9.00, -33.33)
CIE-LCH	lch(68.97, 34.52, 254.89°)
OKLab	oklab(72.84% -0.0538 -0.0932)
OKLCH	oklch(72.84% 0.108 240)
XYZ	xyz(34.6693, 39.3016, 79.1427)
Luminance	0.3931 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B0E4 #E49763

analogous

#63E4D8 #63B0E4 #6370E4

triadic

#63B0E4 #E463B0 #B0E463

tetradic

#63B0E4 #D863E4 #E49763 #70E463

square

#63B0E4 #D863E4 #E49763 #70E463

split-complementary

#63B0E4 #E46370 #E4D863

monochromatic

#1E74AE #2F96DB #63B0E4 #97CAED #CBE5F6

Accessibility & contrast

On white

2.37

#63B0E4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.86

#63B0E4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B0E4

8.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B0E4	#FFFFFF	#000000	##000000
##63B0E4	1.00	2.37	8.86	8.86
#FFFFFF	2.37	1.00	21.00	21.00
#000000	8.86	21.00	1.00	1.00
##000000	8.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99B0E6

Deuteranopia (green-blind)

#87A2E3

Tritanopia (blue-blind)

#00BDC2

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #63b0e4;
/* rgb */ color: rgb(99, 176, 228);
/* oklch */ color: oklch(72.8% 0.108 240.0);

Tailwind

colors: {
  custom: {
    50: '#99c7ec',
    500: '#63b0e4',
    950: '#000000',
  },
}

SCSS

$custom: #63b0e4;
$custom-light: #99c7ec;
$custom-dark: #000000;

JSON

{
  "hex": "#63b0e4",
  "rgb": {
    "r": 99,
    "g": 176,
    "b": 228
  },
  "hsl": {
    "h": 204.186,
    "s": 70.492,
    "l": 64.118
  },
  "oklch": {
    "l": 0.72841,
    "c": 0.10765,
    "h": 240
  },
  "luminance": 0.39305
}

Semantic roles & 50–950 ramp

primary

#63B0E4

secondary

#E8CDBB

accent

#6013D3

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #63B0E4

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

Preview Lab → · Contrast checker → · Palette generator →