#63B4EE#63B4EE

#63B4EE is a light, moderate cyan. Relative luminance 0.415; OKLCH L 74.2% C 0.116 H 241.8°. Best body text is #000000 at 9.29:1 contrast (WCAG AA passes).

Color values

HEX	#63B4EE
RGB	rgb(99, 180, 238)
HSL	hsl(205, 80%, 66%)
HSV	hsv(205, 58%, 93%)
CMYK	cmyk(58.4%, 24.4%, 0%, 6.7%)
CIE-LAB	lab(70.50, -8.11, -36.40)
CIE-LCH	lch(70.50, 37.29, 257.43°)
OKLab	oklab(74.19% -0.0548 -0.1021)
OKLCH	oklch(74.19% 0.116 241.8)
XYZ	xyz(36.8937, 41.4648, 86.9316)
Luminance	0.4147 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B4EE #EE9D63

analogous

#63EEE2 #63B4EE #636EEE

triadic

#63B4EE #EE63B4 #B4EE63

tetradic

#63B4EE #E263EE #EE9D63 #6EEE63

square

#63B4EE #E263EE #EE9D63 #6EEE63

split-complementary

#63B4EE #EE636E #EEE263

monochromatic

#157AC2 #2C99E8 #63B4EE #9ACFF4 #D1E9FA

Accessibility & contrast

On white

2.26

#63B4EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.29

#63B4EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B4EE

9.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B4EE	#FFFFFF	#000000	##000000
##63B4EE	1.00	2.26	9.29	9.29
#FFFFFF	2.26	1.00	21.00	21.00
#000000	9.29	21.00	1.00	1.00
##000000	9.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9AB4F1

Deuteranopia (green-blind)

#87A6ED

Tritanopia (blue-blind)

#00C2C8

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #63b4ee;
/* rgb */ color: rgb(99, 180, 238);
/* oklch */ color: oklch(74.2% 0.116 241.8);

Tailwind

colors: {
  custom: {
    50: '#9acaf3',
    500: '#63b4ee',
    950: '#000000',
  },
}

SCSS

$custom: #63b4ee;
$custom-light: #9acaf3;
$custom-dark: #000000;

JSON

{
  "hex": "#63b4ee",
  "rgb": {
    "r": 99,
    "g": 180,
    "b": 238
  },
  "hsl": {
    "h": 205.036,
    "s": 80.347,
    "l": 66.078
  },
  "oklch": {
    "l": 0.74186,
    "c": 0.11588,
    "h": 241.8
  },
  "luminance": 0.41468
}

Semantic roles & 50–950 ramp

primary

#63B4EE

secondary

#EDD3C0

accent

#6109DD

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B4EE

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

Preview Lab → · Contrast checker → · Palette generator →