#63C5EB#63C5EB

#63C5EB is a light, moderate cyan. Relative luminance 0.486; OKLCH L 77.9% C 0.107 H 226.0°. Best body text is #000000 at 10.72:1 contrast (WCAG AA passes).

Color values

HEX	#63C5EB
RGB	rgb(99, 197, 235)
HSL	hsl(197, 77%, 65%)
HSV	hsv(197, 58%, 92%)
CMYK	cmyk(57.9%, 16.2%, 0%, 7.8%)
CIE-LAB	lab(75.19, -18.05, -27.54)
CIE-LCH	lch(75.19, 32.93, 236.77°)
OKLab	oklab(77.87% -0.0739 -0.0767)
OKLCH	oklch(77.87% 0.107 226)
XYZ	xyz(40.1014, 48.5795, 85.8446)
Luminance	0.4858 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63C5EB #EB8963

analogous

#63EBCD #63C5EB #6381EB

triadic

#63C5EB #EB63C5 #C5EB63

tetradic

#63C5EB #CD63EB #EB8963 #81EB63

square

#63C5EB #CD63EB #EB8963 #81EB63

split-complementary

#63C5EB #EB6381 #EBCD63

monochromatic

#188EBC #2DB1E4 #63C5EB #99D9F2 #CFEDF9

Accessibility & contrast

On white

1.96

#63C5EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.72

#63C5EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63C5EB

10.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63C5EB	#FFFFFF	#000000	##000000
##63C5EB	1.00	1.96	10.72	10.72
#FFFFFF	1.96	1.00	21.00	21.00
#000000	10.72	21.00	1.00	1.00
##000000	10.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B0C1ED

Deuteranopia (green-blind)

#9DB3EB

Tritanopia (blue-blind)

#00D0D1

Achromatopsia (no color)

#B9B9B9

Design tokens & code

CSS

--color: #63c5eb;
/* rgb */ color: rgb(99, 197, 235);
/* oklch */ color: oklch(77.9% 0.107 226.0);

Tailwind

colors: {
  custom: {
    50: '#9ad6f1',
    500: '#63c5eb',
    950: '#000000',
  },
}

SCSS

$custom: #63c5eb;
$custom-light: #9ad6f1;
$custom-dark: #000000;

JSON

{
  "hex": "#63c5eb",
  "rgb": {
    "r": 99,
    "g": 197,
    "b": 235
  },
  "hsl": {
    "h": 196.765,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.77873,
    "c": 0.10653,
    "h": 226
  },
  "luminance": 0.48583
}

Semantic roles & 50–950 ramp

primary

#63C5EB

secondary

#ECCBBE

accent

#450CDA

background

#FAFDFE

surface

#F3FAFD

border

#CDD3D5

text

#0F1416

muted

#7F8384

Preview Lab

Preview with #63C5EB

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

Preview Lab → · Contrast checker → · Palette generator →