#63BFEB#63BFEB

#63BFEB is a light, moderate cyan. Relative luminance 0.459; OKLCH L 76.5% C 0.108 H 231.2°. Best body text is #000000 at 10.18:1 contrast (WCAG AA passes).

Color values

HEX	#63BFEB
RGB	rgb(99, 191, 235)
HSL	hsl(199, 77%, 65%)
HSV	hsv(199, 58%, 92%)
CMYK	cmyk(57.9%, 18.7%, 0%, 7.8%)
CIE-LAB	lab(73.49, -14.92, -30.16)
CIE-LCH	lch(73.49, 33.64, 243.68°)
OKLab	oklab(76.52% -0.0676 -0.0841)
OKLCH	oklch(76.52% 0.108 231.2)
XYZ	xyz(38.7661, 45.9088, 85.3995)
Luminance	0.4591 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63BFEB #EB8F63

analogous

#63EBD3 #63BFEB #637BEB

triadic

#63BFEB #EB63BF #BFEB63

tetradic

#63BFEB #D363EB #EB8F63 #7BEB63

square

#63BFEB #D363EB #EB8F63 #7BEB63

split-complementary

#63BFEB #EB637B #EBD363

monochromatic

#1887BC #2DA9E4 #63BFEB #99D5F2 #CFECF9

Accessibility & contrast

On white

2.06

#63BFEB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.18

#63BFEB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BFEB

10.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63BFEB	#FFFFFF	#000000	##000000
##63BFEB	1.00	2.06	10.18	10.18
#FFFFFF	2.06	1.00	21.00	21.00
#000000	10.18	21.00	1.00	1.00
##000000	10.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9BDED

Deuteranopia (green-blind)

#96AEEA

Tritanopia (blue-blind)

#00CBCD

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #63bfeb;
/* rgb */ color: rgb(99, 191, 235);
/* oklch */ color: oklch(76.5% 0.108 231.2);

Tailwind

colors: {
  custom: {
    50: '#9ad2f1',
    500: '#63bfeb',
    950: '#000000',
  },
}

SCSS

$custom: #63bfeb;
$custom-light: #9ad2f1;
$custom-dark: #000000;

JSON

{
  "hex": "#63bfeb",
  "rgb": {
    "r": 99,
    "g": 191,
    "b": 235
  },
  "hsl": {
    "h": 199.412,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.76516,
    "c": 0.1079,
    "h": 231.2
  },
  "luminance": 0.45912
}

Semantic roles & 50–950 ramp

primary

#63BFEB

secondary

#ECCDBE

accent

#4E0CDA

background

#FAFCFE

surface

#F3F9FD

border

#CDD2D5

text

#0F1416

muted

#7F8284

Preview Lab

Preview with #63BFEB

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

Preview Lab → · Contrast checker → · Palette generator →