#63BFE9#63BFE9

#63BFE9 is a light, moderate cyan. Relative luminance 0.458; OKLCH L 76.4% C 0.106 H 230.0°. Best body text is #000000 at 10.16:1 contrast (WCAG AA passes).

Color values

HEX	#63BFE9
RGB	rgb(99, 191, 233)
HSL	hsl(199, 75%, 65%)
HSV	hsv(199, 58%, 91%)
CMYK	cmyk(57.5%, 18%, 0%, 8.6%)
CIE-LAB	lab(73.41, -15.51, -29.19)
CIE-LCH	lch(73.41, 33.05, 242.01°)
OKLab	oklab(76.43% -0.0683 -0.0814)
OKLCH	oklch(76.43% 0.106 230)
XYZ	xyz(38.4787, 45.7938, 83.8863)
Luminance	0.4580 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63BFE9 #E98D63

analogous

#63E9D0 #63BFE9 #637CE9

triadic

#63BFE9 #E963BF #BFE963

tetradic

#63BFE9 #D063E9 #E98D63 #7CE963

square

#63BFE9 #D063E9 #E98D63 #7CE963

split-complementary

#63BFE9 #E9637C #E9D063

monochromatic

#1A86B8 #2DA9E1 #63BFE9 #99D5F1 #CEEBF8

Accessibility & contrast

On white

2.07

#63BFE9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.16

#63BFE9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BFE9

10.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63BFE9	#FFFFFF	#000000	##000000
##63BFE9	1.00	2.07	10.16	10.16
#FFFFFF	2.07	1.00	21.00	21.00
#000000	10.16	21.00	1.00	1.00
##000000	10.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AABCEB

Deuteranopia (green-blind)

#97AEE8

Tritanopia (blue-blind)

#00CBCD

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #63bfe9;
/* rgb */ color: rgb(99, 191, 233);
/* oklch */ color: oklch(76.4% 0.106 230.0);

Tailwind

colors: {
  custom: {
    50: '#9ad2f0',
    500: '#63bfe9',
    950: '#000000',
  },
}

SCSS

$custom: #63bfe9;
$custom-light: #9ad2f0;
$custom-dark: #000000;

JSON

{
  "hex": "#63bfe9",
  "rgb": {
    "r": 99,
    "g": 191,
    "b": 233
  },
  "hsl": {
    "h": 198.806,
    "s": 75.281,
    "l": 65.098
  },
  "oklch": {
    "l": 0.76432,
    "c": 0.10622,
    "h": 230
  },
  "luminance": 0.45797
}

Semantic roles & 50–950 ramp

primary

#63BFE9

secondary

#EBCBBD

accent

#4D0ED7

background

#FAFCFE

surface

#F3F9FD

border

#CDD2D5

text

#0F1416

muted

#7F8284

Preview Lab

Preview with #63BFE9

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

Preview Lab → · Contrast checker → · Palette generator →