#63ADE9#63ADE9

#63ADE9 is a light, moderate cyan. Relative luminance 0.384; OKLCH L 72.4% C 0.115 H 244.8°. Best body text is #000000 at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#63ADE9
RGB	rgb(99, 173, 233)
HSL	hsl(207, 75%, 65%)
HSV	hsv(207, 58%, 91%)
CMYK	cmyk(57.5%, 25.8%, 0%, 8.6%)
CIE-LAB	lab(68.33, -5.82, -37.05)
CIE-LCH	lch(68.33, 37.51, 261.08°)
OKLab	oklab(72.4% -0.0489 -0.104)
OKLCH	oklch(72.4% 0.115 244.8)
XYZ	xyz(34.7918, 38.4199, 82.6573)
Luminance	0.3842 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63ADE9 #E99F63

analogous

#63E9E2 #63ADE9 #636AE9

triadic

#63ADE9 #E963AD #ADE963

tetradic

#63ADE9 #E263E9 #E99F63 #6AE963

square

#63ADE9 #E263E9 #E99F63 #6AE963

split-complementary

#63ADE9 #E9636A #E9E263

monochromatic

#1A71B8 #2D91E1 #63ADE9 #99C9F1 #CEE5F8

Accessibility & contrast

On white

2.42

#63ADE9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.68

#63ADE9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63ADE9

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63ADE9	#FFFFFF	#000000	##000000
##63ADE9	1.00	2.42	8.68	8.68
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.68	21.00	1.00	1.00
##000000	8.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#93AEEC

Deuteranopia (green-blind)

#81A1E8

Tritanopia (blue-blind)

#00BBC2

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #63ade9;
/* rgb */ color: rgb(99, 173, 233);
/* oklch */ color: oklch(72.4% 0.115 244.8);

Tailwind

colors: {
  custom: {
    50: '#99c5f0',
    500: '#63ade9',
    950: '#000000',
  },
}

SCSS

$custom: #63ade9;
$custom-light: #99c5f0;
$custom-dark: #000000;

JSON

{
  "hex": "#63ade9",
  "rgb": {
    "r": 99,
    "g": 173,
    "b": 233
  },
  "hsl": {
    "h": 206.866,
    "s": 75.281,
    "l": 65.098
  },
  "oklch": {
    "l": 0.72402,
    "c": 0.11492,
    "h": 244.8
  },
  "luminance": 0.38423
}

Semantic roles & 50–950 ramp

primary

#63ADE9

secondary

#EBD2BD

accent

#680ED7

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1216

muted

#7E8184

Preview Lab

Preview with #63ADE9

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

Preview Lab → · Contrast checker → · Palette generator →