#63B2EB#63B2EB

#63B2EB is a light, moderate cyan. Relative luminance 0.405; OKLCH L 73.6% C 0.114 H 241.9°. Best body text is #000000 at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#63B2EB
RGB	rgb(99, 178, 235)
HSL	hsl(205, 77%, 65%)
HSV	hsv(205, 58%, 92%)
CMYK	cmyk(57.9%, 24.3%, 0%, 7.8%)
CIE-LAB	lab(69.82, -7.95, -35.83)
CIE-LCH	lch(69.82, 36.70, 257.50°)
OKLab	oklab(73.6% -0.0537 -0.1004)
OKLCH	oklch(73.6% 0.114 241.9)
XYZ	xyz(36.0558, 40.4883, 84.4961)
Luminance	0.4049 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B2EB #EB9C63

analogous

#63EBE0 #63B2EB #636EEB

triadic

#63B2EB #EB63B2 #B2EB63

tetradic

#63B2EB #E063EB #EB9C63 #6EEB63

square

#63B2EB #E063EB #EB9C63 #6EEB63

split-complementary

#63B2EB #EB636E #EBE063

monochromatic

#1877BC #2D97E4 #63B2EB #99CDF2 #CFE8F9

Accessibility & contrast

On white

2.31

#63B2EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.10

#63B2EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B2EB

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B2EB	#FFFFFF	#000000	##000000
##63B2EB	1.00	2.31	9.10	9.10
#FFFFFF	2.31	1.00	21.00	21.00
#000000	9.10	21.00	1.00	1.00
##000000	9.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99B2EE

Deuteranopia (green-blind)

#86A4EA

Tritanopia (blue-blind)

#00C0C5

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #63b2eb;
/* rgb */ color: rgb(99, 178, 235);
/* oklch */ color: oklch(73.6% 0.114 241.9);

Tailwind

colors: {
  custom: {
    50: '#99c8f1',
    500: '#63b2eb',
    950: '#000000',
  },
}

SCSS

$custom: #63b2eb;
$custom-light: #99c8f1;
$custom-dark: #000000;

JSON

{
  "hex": "#63b2eb",
  "rgb": {
    "r": 99,
    "g": 178,
    "b": 235
  },
  "hsl": {
    "h": 205.147,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.73604,
    "c": 0.11388,
    "h": 241.9
  },
  "luminance": 0.40492
}

Semantic roles & 50–950 ramp

primary

#63B2EB

secondary

#ECD1BE

accent

#620CDA

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B2EB

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

Preview Lab → · Contrast checker → · Palette generator →