#63BDE9#63BDE9

#63BDE9 is a light, moderate cyan. Relative luminance 0.449; OKLCH L 76.0% C 0.107 H 231.7°. Best body text is #000000 at 9.99:1 contrast (WCAG AA passes).

Color values

HEX	#63BDE9
RGB	rgb(99, 189, 233)
HSL	hsl(200, 75%, 65%)
HSV	hsv(200, 58%, 91%)
CMYK	cmyk(57.5%, 18.9%, 0%, 8.6%)
CIE-LAB	lab(72.84, -14.46, -30.06)
CIE-LCH	lch(72.84, 33.36, 244.31°)
OKLab	oklab(75.98% -0.0661 -0.0839)
OKLCH	oklch(75.98% 0.107 231.7)
XYZ	xyz(38.0456, 44.9275, 83.7419)
Luminance	0.4493 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63BDE9 #E98F63

analogous

#63E9D2 #63BDE9 #637AE9

triadic

#63BDE9 #E963BD #BDE963

tetradic

#63BDE9 #D263E9 #E98F63 #7AE963

square

#63BDE9 #D263E9 #E98F63 #7AE963

split-complementary

#63BDE9 #E9637A #E9D263

monochromatic

#1A84B8 #2DA6E1 #63BDE9 #99D4F1 #CEEAF8

Accessibility & contrast

On white

2.10

#63BDE9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.99

#63BDE9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BDE9

9.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63BDE9	#FFFFFF	#000000	##000000
##63BDE9	1.00	2.10	9.99	9.99
#FFFFFF	2.10	1.00	21.00	21.00
#000000	9.99	21.00	1.00	1.00
##000000	9.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A7BBEB

Deuteranopia (green-blind)

#94ADE8

Tritanopia (blue-blind)

#00C9CB

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #63bde9;
/* rgb */ color: rgb(99, 189, 233);
/* oklch */ color: oklch(76.0% 0.107 231.7);

Tailwind

colors: {
  custom: {
    50: '#9ad0f0',
    500: '#63bde9',
    950: '#000000',
  },
}

SCSS

$custom: #63bde9;
$custom-light: #9ad0f0;
$custom-dark: #000000;

JSON

{
  "hex": "#63bde9",
  "rgb": {
    "r": 99,
    "g": 189,
    "b": 233
  },
  "hsl": {
    "h": 199.701,
    "s": 75.281,
    "l": 65.098
  },
  "oklch": {
    "l": 0.7598,
    "c": 0.10681,
    "h": 231.7
  },
  "luminance": 0.44931
}

Semantic roles & 50–950 ramp

primary

#63BDE9

secondary

#EBCCBD

accent

#500ED7

background

#FAFCFE

surface

#F3F9FD

border

#CDD2D5

text

#0F1416

muted

#7F8284

Preview Lab

Preview with #63BDE9

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

Preview Lab → · Contrast checker → · Palette generator →