#63B3EC#63B3EC

#63B3EC is a light, moderate cyan. Relative luminance 0.409; OKLCH L 73.9% C 0.114 H 241.6°. Best body text is #000000 at 9.19:1 contrast (WCAG AA passes).

Color values

HEX	#63B3EC
RGB	rgb(99, 179, 236)
HSL	hsl(205, 78%, 66%)
HSV	hsv(205, 58%, 93%)
CMYK	cmyk(58.1%, 24.2%, 0%, 7.5%)
CIE-LAB	lab(70.14, -8.18, -35.88)
CIE-LCH	lch(70.14, 36.80, 257.15°)
OKLab	oklab(73.87% -0.0544 -0.1006)
OKLCH	oklch(73.87% 0.114 241.6)
XYZ	xyz(36.4004, 40.9456, 85.3257)
Luminance	0.4095 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B3EC #EC9C63

analogous

#63ECE1 #63B3EC #636EEC

triadic

#63B3EC #EC63B3 #B3EC63

tetradic

#63B3EC #E163EC #EC9C63 #6EEC63

square

#63B3EC #E163EC #EC9C63 #6EEC63

split-complementary

#63B3EC #EC636E #ECE163

monochromatic

#1778BE #2C98E5 #63B3EC #9ACEF3 #D0E8F9

Accessibility & contrast

On white

2.29

#63B3EC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.19

#63B3EC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B3EC

9.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B3EC	#FFFFFF	#000000	##000000
##63B3EC	1.00	2.29	9.19	9.19
#FFFFFF	2.29	1.00	21.00	21.00
#000000	9.19	21.00	1.00	1.00
##000000	9.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9AB3EF

Deuteranopia (green-blind)

#87A5EB

Tritanopia (blue-blind)

#00C1C6

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #63b3ec;
/* rgb */ color: rgb(99, 179, 236);
/* oklch */ color: oklch(73.9% 0.114 241.6);

Tailwind

colors: {
  custom: {
    50: '#9ac9f2',
    500: '#63b3ec',
    950: '#000000',
  },
}

SCSS

$custom: #63b3ec;
$custom-light: #9ac9f2;
$custom-dark: #000000;

JSON

{
  "hex": "#63b3ec",
  "rgb": {
    "r": 99,
    "g": 179,
    "b": 236
  },
  "hsl": {
    "h": 204.964,
    "s": 78.286,
    "l": 65.686
  },
  "oklch": {
    "l": 0.73872,
    "c": 0.11434,
    "h": 241.6
  },
  "luminance": 0.40949
}

Semantic roles & 50–950 ramp

primary

#63B3EC

secondary

#ECD2BF

accent

#610BDB

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B3EC

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

Preview Lab → · Contrast checker → · Palette generator →