#63B8EE#63B8EE

#63B8EE is a light, moderate cyan. Relative luminance 0.431; OKLCH L 75.1% C 0.114 H 238.7°. Best body text is #000000 at 9.62:1 contrast (WCAG AA passes).

Color values

HEX	#63B8EE
RGB	rgb(99, 184, 238)
HSL	hsl(203, 80%, 66%)
HSV	hsv(203, 58%, 93%)
CMYK	cmyk(58.4%, 22.7%, 0%, 6.7%)
CIE-LAB	lab(71.63, -10.28, -34.66)
CIE-LCH	lch(71.63, 36.15, 253.48°)
OKLab	oklab(75.08% -0.0591 -0.097)
OKLCH	oklch(75.08% 0.114 238.7)
XYZ	xyz(37.7129, 43.1032, 87.2046)
Luminance	0.4311 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B8EE #EE9963

analogous

#63EEDE #63B8EE #6372EE

triadic

#63B8EE #EE63B8 #B8EE63

tetradic

#63B8EE #DE63EE #EE9963 #72EE63

square

#63B8EE #DE63EE #EE9963 #72EE63

split-complementary

#63B8EE #EE6372 #EEDE63

monochromatic

#157FC2 #2C9FE8 #63B8EE #9AD1F4 #D1EAFA

Accessibility & contrast

On white

2.18

#63B8EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.62

#63B8EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B8EE

9.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B8EE	#FFFFFF	#000000	##000000
##63B8EE	1.00	2.18	9.62	9.62
#FFFFFF	2.18	1.00	21.00	21.00
#000000	9.62	21.00	1.00	1.00
##000000	9.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9FB7F1

Deuteranopia (green-blind)

#8CA9ED

Tritanopia (blue-blind)

#00C6CA

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #63b8ee;
/* rgb */ color: rgb(99, 184, 238);
/* oklch */ color: oklch(75.1% 0.114 238.7);

Tailwind

colors: {
  custom: {
    50: '#9acdf3',
    500: '#63b8ee',
    950: '#000000',
  },
}

SCSS

$custom: #63b8ee;
$custom-light: #9acdf3;
$custom-dark: #000000;

JSON

{
  "hex": "#63b8ee",
  "rgb": {
    "r": 99,
    "g": 184,
    "b": 238
  },
  "hsl": {
    "h": 203.309,
    "s": 80.347,
    "l": 66.078
  },
  "oklch": {
    "l": 0.75076,
    "c": 0.11362,
    "h": 238.7
  },
  "luminance": 0.43107
}

Semantic roles & 50–950 ramp

primary

#63B8EE

secondary

#EDD1C0

accent

#5B09DD

background

#FAFCFE

surface

#F3F9FD

border

#CDD2D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B8EE

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

Preview Lab → · Contrast checker → · Palette generator →