#63B3ED#63B3ED

#63B3ED is a light, moderate cyan. Relative luminance 0.410; OKLCH L 73.9% C 0.115 H 242.1°. Best body text is #000000 at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#63B3ED
RGB	rgb(99, 179, 237)
HSL	hsl(205, 79%, 66%)
HSV	hsv(205, 58%, 93%)
CMYK	cmyk(58.2%, 24.5%, 0%, 7.1%)
CIE-LAB	lab(70.18, -7.88, -36.36)
CIE-LCH	lch(70.18, 37.20, 257.78°)
OKLab	oklab(73.92% -0.0541 -0.102)
OKLCH	oklch(73.92% 0.115 242.1)
XYZ	xyz(36.5461, 41.0039, 86.0929)
Luminance	0.4101 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B3ED #ED9D63

analogous

#63EDE2 #63B3ED #636EED

triadic

#63B3ED #ED63B3 #B3ED63

tetradic

#63B3ED #E263ED #ED9D63 #6EED63

square

#63B3ED #E263ED #ED9D63 #6EED63

split-complementary

#63B3ED #ED636E #EDE263

monochromatic

#1678C0 #2C98E7 #63B3ED #9ACEF3 #D1E8FA

Accessibility & contrast

On white

2.28

#63B3ED on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.20

#63B3ED on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B3ED

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B3ED	#FFFFFF	#000000	##000000
##63B3ED	1.00	2.28	9.20	9.20
#FFFFFF	2.28	1.00	21.00	21.00
#000000	9.20	21.00	1.00	1.00
##000000	9.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99B3F0

Deuteranopia (green-blind)

#87A5EC

Tritanopia (blue-blind)

#00C1C7

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #63b3ed;
/* rgb */ color: rgb(99, 179, 237);
/* oklch */ color: oklch(73.9% 0.115 242.1);

Tailwind

colors: {
  custom: {
    50: '#9ac9f3',
    500: '#63b3ed',
    950: '#000000',
  },
}

SCSS

$custom: #63b3ed;
$custom-light: #9ac9f3;
$custom-dark: #000000;

JSON

{
  "hex": "#63b3ed",
  "rgb": {
    "r": 99,
    "g": 179,
    "b": 237
  },
  "hsl": {
    "h": 205.217,
    "s": 79.31,
    "l": 65.882
  },
  "oklch": {
    "l": 0.73918,
    "c": 0.11542,
    "h": 242.1
  },
  "luminance": 0.41007
}

Semantic roles & 50–950 ramp

primary

#63B3ED

secondary

#EDD2BF

accent

#620ADC

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B3ED

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

Preview Lab → · Contrast checker → · Palette generator →