#63B3EE#63B3EE

#63B3EE is a light, moderate cyan. Relative luminance 0.411; OKLCH L 74.0% C 0.116 H 242.5°. Best body text is #000000 at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#63B3EE
RGB	rgb(99, 179, 238)
HSL	hsl(205, 80%, 66%)
HSV	hsv(205, 58%, 93%)
CMYK	cmyk(58.4%, 24.8%, 0%, 6.7%)
CIE-LAB	lab(70.22, -7.57, -36.84)
CIE-LCH	lch(70.22, 37.61, 258.39°)
OKLab	oklab(73.96% -0.0538 -0.1033)
OKLCH	oklch(73.96% 0.116 242.5)
XYZ	xyz(36.6926, 41.0625, 86.8645)
Luminance	0.4107 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B3EE #EE9E63

analogous

#63EEE4 #63B3EE #636DEE

triadic

#63B3EE #EE63B3 #B3EE63

tetradic

#63B3EE #E463EE #EE9E63 #6DEE63

square

#63B3EE #E463EE #EE9E63 #6DEE63

split-complementary

#63B3EE #EE636D #EEE463

monochromatic

#1578C2 #2C98E8 #63B3EE #9ACEF4 #D1E9FA

Accessibility & contrast

On white

2.28

#63B3EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.21

#63B3EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B3EE

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B3EE	#FFFFFF	#000000	##000000
##63B3EE	1.00	2.28	9.21	9.21
#FFFFFF	2.28	1.00	21.00	21.00
#000000	9.21	21.00	1.00	1.00
##000000	9.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99B3F1

Deuteranopia (green-blind)

#86A5ED

Tritanopia (blue-blind)

#00C1C7

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #63b3ee;
/* rgb */ color: rgb(99, 179, 238);
/* oklch */ color: oklch(74.0% 0.116 242.5);

Tailwind

colors: {
  custom: {
    50: '#9ac9f3',
    500: '#63b3ee',
    950: '#000000',
  },
}

SCSS

$custom: #63b3ee;
$custom-light: #9ac9f3;
$custom-dark: #000000;

JSON

{
  "hex": "#63b3ee",
  "rgb": {
    "r": 99,
    "g": 179,
    "b": 238
  },
  "hsl": {
    "h": 205.468,
    "s": 80.347,
    "l": 66.078
  },
  "oklch": {
    "l": 0.73964,
    "c": 0.11649,
    "h": 242.5
  },
  "luminance": 0.41066
}

Semantic roles & 50–950 ramp

primary

#63B3EE

secondary

#EDD3C0

accent

#6309DD

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B3EE

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

Preview Lab → · Contrast checker → · Palette generator →