#63B1EB#63B1EB

#63B1EB is a light, moderate cyan. Relative luminance 0.401; OKLCH L 73.4% C 0.115 H 242.7°. Best body text is #000000 at 9.02:1 contrast (WCAG AA passes).

Color values

HEX	#63B1EB
RGB	rgb(99, 177, 235)
HSL	hsl(206, 77%, 65%)
HSV	hsv(206, 58%, 92%)
CMYK	cmyk(57.9%, 24.7%, 0%, 7.8%)
CIE-LAB	lab(69.53, -7.40, -36.27)
CIE-LCH	lch(69.53, 37.02, 258.47°)
OKLab	oklab(73.38% -0.0526 -0.1017)
OKLCH	oklch(73.38% 0.115 242.7)
XYZ	xyz(35.8576, 40.0918, 84.4300)
Luminance	0.4009 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B1EB #EB9D63

analogous

#63EBE1 #63B1EB #636DEB

triadic

#63B1EB #EB63B1 #B1EB63

tetradic

#63B1EB #E163EB #EB9D63 #6DEB63

square

#63B1EB #E163EB #EB9D63 #6DEB63

split-complementary

#63B1EB #EB636D #EBE163

monochromatic

#1876BC #2D96E4 #63B1EB #99CCF2 #CFE7F9

Accessibility & contrast

On white

2.33

#63B1EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.02

#63B1EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B1EB

9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B1EB	#FFFFFF	#000000	##000000
##63B1EB	1.00	2.33	9.02	9.02
#FFFFFF	2.33	1.00	21.00	21.00
#000000	9.02	21.00	1.00	1.00
##000000	9.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#97B1EE

Deuteranopia (green-blind)

#85A4EA

Tritanopia (blue-blind)

#00BFC5

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #63b1eb;
/* rgb */ color: rgb(99, 177, 235);
/* oklch */ color: oklch(73.4% 0.115 242.7);

Tailwind

colors: {
  custom: {
    50: '#99c8f1',
    500: '#63b1eb',
    950: '#000000',
  },
}

SCSS

$custom: #63b1eb;
$custom-light: #99c8f1;
$custom-dark: #000000;

JSON

{
  "hex": "#63b1eb",
  "rgb": {
    "r": 99,
    "g": 177,
    "b": 235
  },
  "hsl": {
    "h": 205.588,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.73382,
    "c": 0.1145,
    "h": 242.7
  },
  "luminance": 0.40095
}

Semantic roles & 50–950 ramp

primary

#63B1EB

secondary

#ECD2BE

accent

#640CDA

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B1EB

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

Preview Lab → · Contrast checker → · Palette generator →