#63A9EE#63A9EE

#63A9EE is a light, vivid cyan. Relative luminance 0.372; OKLCH L 71.8% C 0.124 H 249.6°. Best body text is #000000 at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#63A9EE
RGB	rgb(99, 169, 238)
HSL	hsl(210, 80%, 66%)
HSV	hsv(210, 58%, 93%)
CMYK	cmyk(58.4%, 29%, 0%, 6.7%)
CIE-LAB	lab(67.43, -2.03, -41.19)
CIE-LCH	lch(67.43, 41.24, 267.18°)
OKLab	oklab(71.76% -0.0431 -0.116)
OKLCH	oklch(71.76% 0.124 249.6)
XYZ	xyz(34.7606, 37.1985, 86.2205)
Luminance	0.3720 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63A9EE #EEA863

analogous

#63EEED #63A9EE #6363EE

triadic

#63A9EE #EE63A9 #A9EE63

tetradic

#63A9EE #ED63EE #EEA863 #63EE63

square

#63A9EE #ED63EE #EEA863 #63EE63

split-complementary

#63A9EE #EE6363 #EEED63

monochromatic

#156CC2 #2C8BE8 #63A9EE #9AC7F4 #D1E6FA

Accessibility & contrast

On white

2.49

#63A9EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.44

#63A9EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63A9EE

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63A9EE	#FFFFFF	#000000	##000000
##63A9EE	1.00	2.49	8.44	8.44
#FFFFFF	2.49	1.00	21.00	21.00
#000000	8.44	21.00	1.00	1.00
##000000	8.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8CACF1

Deuteranopia (green-blind)

#799EED

Tritanopia (blue-blind)

#00B9C1

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #63a9ee;
/* rgb */ color: rgb(99, 169, 238);
/* oklch */ color: oklch(71.8% 0.124 249.6);

Tailwind

colors: {
  custom: {
    50: '#9ac2f4',
    500: '#63a9ee',
    950: '#000000',
  },
}

SCSS

$custom: #63a9ee;
$custom-light: #9ac2f4;
$custom-dark: #000000;

JSON

{
  "hex": "#63a9ee",
  "rgb": {
    "r": 99,
    "g": 169,
    "b": 238
  },
  "hsl": {
    "h": 209.784,
    "s": 80.347,
    "l": 66.078
  },
  "oklch": {
    "l": 0.71761,
    "c": 0.12376,
    "h": 249.6
  },
  "luminance": 0.37202
}

Semantic roles & 50–950 ramp

primary

#63A9EE

secondary

#EDD6C0

accent

#7209DD

background

#FAFBFE

surface

#F3F7FD

border

#CDD0D5

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #63A9EE

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

Preview Lab → · Contrast checker → · Palette generator →