#63B5ED#63B5ED

#63B5ED is a light, moderate cyan. Relative luminance 0.418; OKLCH L 74.4% C 0.114 H 240.5°. Best body text is #000000 at 9.36:1 contrast (WCAG AA passes).

Color values

HEX	#63B5ED
RGB	rgb(99, 181, 237)
HSL	hsl(204, 79%, 66%)
HSV	hsv(204, 58%, 93%)
CMYK	cmyk(58.2%, 23.6%, 0%, 7.1%)
CIE-LAB	lab(70.74, -8.96, -35.48)
CIE-LCH	lch(70.74, 36.60, 255.82°)
OKLab	oklab(74.36% -0.0562 -0.0994)
OKLCH	oklch(74.36% 0.114 240.5)
XYZ	xyz(36.9498, 41.8114, 86.2275)
Luminance	0.4182 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B5ED #ED9B63

analogous

#63EDE0 #63B5ED #6370ED

triadic

#63B5ED #ED63B5 #B5ED63

tetradic

#63B5ED #E063ED #ED9B63 #70ED63

square

#63B5ED #E063ED #ED9B63 #70ED63

split-complementary

#63B5ED #ED6370 #EDE063

monochromatic

#167BC0 #2C9BE7 #63B5ED #9ACFF3 #D1E9FA

Accessibility & contrast

On white

2.24

#63B5ED on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.36

#63B5ED on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B5ED

9.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B5ED	#FFFFFF	#000000	##000000
##63B5ED	1.00	2.24	9.36	9.36
#FFFFFF	2.24	1.00	21.00	21.00
#000000	9.36	21.00	1.00	1.00
##000000	9.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9CB5F0

Deuteranopia (green-blind)

#89A7EC

Tritanopia (blue-blind)

#00C3C8

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #63b5ed;
/* rgb */ color: rgb(99, 181, 237);
/* oklch */ color: oklch(74.4% 0.114 240.5);

Tailwind

colors: {
  custom: {
    50: '#9acbf3',
    500: '#63b5ed',
    950: '#000000',
  },
}

SCSS

$custom: #63b5ed;
$custom-light: #9acbf3;
$custom-dark: #000000;

JSON

{
  "hex": "#63b5ed",
  "rgb": {
    "r": 99,
    "g": 181,
    "b": 237
  },
  "hsl": {
    "h": 204.348,
    "s": 79.31,
    "l": 65.882
  },
  "oklch": {
    "l": 0.74363,
    "c": 0.11423,
    "h": 240.5
  },
  "luminance": 0.41815
}

Semantic roles & 50–950 ramp

primary

#63B5ED

secondary

#EDD2BF

accent

#5F0ADC

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B5ED

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

Preview Lab → · Contrast checker → · Palette generator →