#63B7E9#63B7E9

#63B7E9 is a light, moderate cyan. Relative luminance 0.424; OKLCH L 74.6% C 0.109 H 236.9°. Best body text is #000000 at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#63B7E9
RGB	rgb(99, 183, 233)
HSL	hsl(202, 75%, 65%)
HSV	hsv(202, 58%, 91%)
CMYK	cmyk(57.5%, 21.5%, 0%, 8.6%)
CIE-LAB	lab(71.15, -11.26, -32.68)
CIE-LCH	lch(71.15, 34.57, 250.98°)
OKLab	oklab(74.63% -0.0597 -0.0914)
OKLCH	oklch(74.63% 0.109 236.9)
XYZ	xyz(36.7815, 42.3994, 83.3206)
Luminance	0.4240 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B7E9 #E99563

analogous

#63E9D8 #63B7E9 #6374E9

triadic

#63B7E9 #E963B7 #B7E963

tetradic

#63B7E9 #D863E9 #E99563 #74E963

square

#63B7E9 #D863E9 #E99563 #74E963

split-complementary

#63B7E9 #E96374 #E9D863

monochromatic

#1A7DB8 #2D9EE1 #63B7E9 #99D0F1 #CEE9F8

Accessibility & contrast

On white

2.22

#63B7E9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.48

#63B7E9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B7E9

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B7E9	#FFFFFF	#000000	##000000
##63B7E9	1.00	2.22	9.48	9.48
#FFFFFF	2.22	1.00	21.00	21.00
#000000	9.48	21.00	1.00	1.00
##000000	9.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0B6EB

Deuteranopia (green-blind)

#8DA8E8

Tritanopia (blue-blind)

#00C4C8

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #63b7e9;
/* rgb */ color: rgb(99, 183, 233);
/* oklch */ color: oklch(74.6% 0.109 236.9);

Tailwind

colors: {
  custom: {
    50: '#99ccf0',
    500: '#63b7e9',
    950: '#000000',
  },
}

SCSS

$custom: #63b7e9;
$custom-light: #99ccf0;
$custom-dark: #000000;

JSON

{
  "hex": "#63b7e9",
  "rgb": {
    "r": 99,
    "g": 183,
    "b": 233
  },
  "hsl": {
    "h": 202.388,
    "s": 75.281,
    "l": 65.098
  },
  "oklch": {
    "l": 0.74631,
    "c": 0.10916,
    "h": 236.9
  },
  "luminance": 0.42403
}

Semantic roles & 50–950 ramp

primary

#63B7E9

secondary

#EBCEBD

accent

#590ED7

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1316

muted

#7F8284

Preview Lab

Preview with #63B7E9

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

Preview Lab → · Contrast checker → · Palette generator →