#63B3EA#63B3EA

#63B3EA is a light, moderate cyan. Relative luminance 0.408; OKLCH L 73.8% C 0.112 H 240.6°. Best body text is #000000 at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#63B3EA
RGB	rgb(99, 179, 234)
HSL	hsl(204, 76%, 65%)
HSV	hsv(204, 58%, 92%)
CMYK	cmyk(57.7%, 23.5%, 0%, 8.2%)
CIE-LAB	lab(70.06, -8.80, -34.91)
CIE-LCH	lch(70.06, 36.00, 255.86°)
OKLab	oklab(73.78% -0.0551 -0.0978)
OKLCH	oklch(73.78% 0.112 240.6)
XYZ	xyz(36.1115, 40.8301, 83.8039)
Luminance	0.4083 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B3EA #EA9A63

analogous

#63EADD #63B3EA #6370EA

triadic

#63B3EA #EA63B3 #B3EA63

tetradic

#63B3EA #DD63EA #EA9A63 #70EA63

square

#63B3EA #DD63EA #EA9A63 #70EA63

split-complementary

#63B3EA #EA6370 #EADD63

monochromatic

#1978BA #2D99E3 #63B3EA #99CDF1 #CFE8F9

Accessibility & contrast

On white

2.29

#63B3EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.17

#63B3EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B3EA

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B3EA	#FFFFFF	#000000	##000000
##63B3EA	1.00	2.29	9.17	9.17
#FFFFFF	2.29	1.00	21.00	21.00
#000000	9.17	21.00	1.00	1.00
##000000	9.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9AB3ED

Deuteranopia (green-blind)

#88A5E9

Tritanopia (blue-blind)

#00C1C6

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #63b3ea;
/* rgb */ color: rgb(99, 179, 234);
/* oklch */ color: oklch(73.8% 0.112 240.6);

Tailwind

colors: {
  custom: {
    50: '#99c9f1',
    500: '#63b3ea',
    950: '#000000',
  },
}

SCSS

$custom: #63b3ea;
$custom-light: #99c9f1;
$custom-dark: #000000;

JSON

{
  "hex": "#63b3ea",
  "rgb": {
    "r": 99,
    "g": 179,
    "b": 234
  },
  "hsl": {
    "h": 204.444,
    "s": 76.271,
    "l": 65.294
  },
  "oklch": {
    "l": 0.73781,
    "c": 0.11223,
    "h": 240.6
  },
  "luminance": 0.40833
}

Semantic roles & 50–950 ramp

primary

#63B3EA

secondary

#EBD0BE

accent

#600DD8

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1316

muted

#7F8284

Preview Lab

Preview with #63B3EA

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

Preview Lab → · Contrast checker → · Palette generator →