#63B1EE#63B1EE

#63B1EE is a light, moderate cyan. Relative luminance 0.403; OKLCH L 73.5% C 0.118 H 244.0°. Best body text is #000000 at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#63B1EE
RGB	rgb(99, 177, 238)
HSL	hsl(206, 80%, 66%)
HSV	hsv(206, 58%, 93%)
CMYK	cmyk(58.4%, 25.6%, 0%, 6.7%)
CIE-LAB	lab(69.66, -6.47, -37.71)
CIE-LCH	lch(69.66, 38.26, 260.26°)
OKLab	oklab(73.52% -0.0516 -0.1059)
OKLCH	oklch(73.52% 0.118 244)
XYZ	xyz(36.2947, 40.2666, 86.7319)
Luminance	0.4027 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B1EE #EEA063

analogous

#63EEE5 #63B1EE #636BEE

triadic

#63B1EE #EE63B1 #B1EE63

tetradic

#63B1EE #E563EE #EEA063 #6BEE63

square

#63B1EE #E563EE #EEA063 #6BEE63

split-complementary

#63B1EE #EE636B #EEE563

monochromatic

#1576C2 #2C95E8 #63B1EE #9ACDF4 #D1E8FA

Accessibility & contrast

On white

2.32

#63B1EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.05

#63B1EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B1EE

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B1EE	#FFFFFF	#000000	##000000
##63B1EE	1.00	2.32	9.05	9.05
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.05	21.00	1.00	1.00
##000000	9.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#96B2F1

Deuteranopia (green-blind)

#84A4ED

Tritanopia (blue-blind)

#00C0C6

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #63b1ee;
/* rgb */ color: rgb(99, 177, 238);
/* oklch */ color: oklch(73.5% 0.118 244.0);

Tailwind

colors: {
  custom: {
    50: '#9ac8f3',
    500: '#63b1ee',
    950: '#000000',
  },
}

SCSS

$custom: #63b1ee;
$custom-light: #9ac8f3;
$custom-dark: #000000;

JSON

{
  "hex": "#63b1ee",
  "rgb": {
    "r": 99,
    "g": 177,
    "b": 238
  },
  "hsl": {
    "h": 206.331,
    "s": 80.347,
    "l": 66.078
  },
  "oklch": {
    "l": 0.73521,
    "c": 0.11779,
    "h": 244
  },
  "luminance": 0.4027
}

Semantic roles & 50–950 ramp

primary

#63B1EE

secondary

#EDD4C0

accent

#6609DD

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B1EE

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

Preview Lab → · Contrast checker → · Palette generator →