#63B8EB#63B8EB

#63B8EB is a light, moderate cyan. Relative luminance 0.429; OKLCH L 74.9% C 0.111 H 237.1°. Best body text is #000000 at 9.59:1 contrast (WCAG AA passes).

Color values

HEX	#63B8EB
RGB	rgb(99, 184, 235)
HSL	hsl(203, 77%, 65%)
HSV	hsv(203, 58%, 92%)
CMYK	cmyk(57.9%, 21.7%, 0%, 7.8%)
CIE-LAB	lab(71.51, -11.19, -33.21)
CIE-LCH	lch(71.51, 35.05, 251.37°)
OKLab	oklab(74.94% -0.0601 -0.0929)
OKLCH	oklch(74.94% 0.111 237.1)
XYZ	xyz(37.2758, 42.9283, 84.9027)
Luminance	0.4293 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B8EB #EB9663

analogous

#63EBDA #63B8EB #6374EB

triadic

#63B8EB #EB63B8 #B8EB63

tetradic

#63B8EB #DA63EB #EB9663 #74EB63

square

#63B8EB #DA63EB #EB9663 #74EB63

split-complementary

#63B8EB #EB6374 #EBDA63

monochromatic

#187EBC #2D9FE4 #63B8EB #99D1F2 #CFE9F9

Accessibility & contrast

On white

2.19

#63B8EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.59

#63B8EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B8EB

9.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B8EB	#FFFFFF	#000000	##000000
##63B8EB	1.00	2.19	9.59	9.59
#FFFFFF	2.19	1.00	21.00	21.00
#000000	9.59	21.00	1.00	1.00
##000000	9.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0B7ED

Deuteranopia (green-blind)

#8EA9EA

Tritanopia (blue-blind)

#00C5C9

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #63b8eb;
/* rgb */ color: rgb(99, 184, 235);
/* oklch */ color: oklch(74.9% 0.111 237.1);

Tailwind

colors: {
  custom: {
    50: '#9acdf1',
    500: '#63b8eb',
    950: '#000000',
  },
}

SCSS

$custom: #63b8eb;
$custom-light: #9acdf1;
$custom-dark: #000000;

JSON

{
  "hex": "#63b8eb",
  "rgb": {
    "r": 99,
    "g": 184,
    "b": 235
  },
  "hsl": {
    "h": 202.5,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.74943,
    "c": 0.11064,
    "h": 237.1
  },
  "luminance": 0.42932
}

Semantic roles & 50–950 ramp

primary

#63B8EB

secondary

#ECCFBE

accent

#590CDA

background

#FAFCFE

surface

#F3F9FD

border

#CDD2D5

text

#0F1316

muted

#7F8284

Preview Lab

Preview with #63B8EB

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

Preview Lab → · Contrast checker → · Palette generator →