#63BDF4#63BDF4

#63BDF4 is a light, moderate cyan. Relative luminance 0.456; OKLCH L 76.5% C 0.117 H 237.8°. Best body text is #000000 at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#63BDF4
RGB	rgb(99, 189, 244)
HSL	hsl(203, 87%, 67%)
HSV	hsv(203, 59%, 96%)
CMYK	cmyk(59.4%, 22.5%, 0%, 4.3%)
CIE-LAB	lab(73.27, -11.13, -35.35)
CIE-LCH	lch(73.27, 37.07, 252.52°)
OKLab	oklab(76.46% -0.0624 -0.099)
OKLCH	oklch(76.46% 0.117 237.8)
XYZ	xyz(39.6662, 45.5757, 92.2770)
Luminance	0.4558 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63BDF4 #F49A63

analogous

#63F4E3 #63BDF4 #6374F4

triadic

#63BDF4 #F463BD #BDF463

tetradic

#63BDF4 #E363F4 #F49A63 #74F463

square

#63BDF4 #E363F4 #F49A63 #74F463

split-complementary

#63BDF4 #F46374 #F4E363

monochromatic

#0F85CE #2AA5F0 #63BDF4 #9CD5F8 #D5EDFC

Accessibility & contrast

On white

2.08

#63BDF4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.12

#63BDF4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BDF4

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63BDF4	#FFFFFF	#000000	##000000
##63BDF4	1.00	2.08	10.12	10.12
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.12	21.00	1.00	1.00
##000000	10.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4BCF7

Deuteranopia (green-blind)

#90ADF3

Tritanopia (blue-blind)

#00CBCF

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #63bdf4;
/* rgb */ color: rgb(99, 189, 244);
/* oklch */ color: oklch(76.5% 0.117 237.8);

Tailwind

colors: {
  custom: {
    50: '#9bd0f8',
    500: '#63bdf4',
    950: '#000000',
  },
}

SCSS

$custom: #63bdf4;
$custom-light: #9bd0f8;
$custom-dark: #000000;

JSON

{
  "hex": "#63bdf4",
  "rgb": {
    "r": 99,
    "g": 189,
    "b": 244
  },
  "hsl": {
    "h": 202.759,
    "s": 86.826,
    "l": 67.255
  },
  "oklch": {
    "l": 0.76459,
    "c": 0.11704,
    "h": 237.8
  },
  "luminance": 0.45579
}

Semantic roles & 50–950 ramp

primary

#63BDF4

secondary

#F0D4C3

accent

#5802E3

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1417

muted

#7F8285

Preview Lab

Preview with #63BDF4

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

Preview Lab → · Contrast checker → · Palette generator →