#63BDF3#63BDF3

#63BDF3 is a light, moderate cyan. Relative luminance 0.455; OKLCH L 76.4% C 0.116 H 237.3°. Best body text is #000000 at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#63BDF3
RGB	rgb(99, 189, 243)
HSL	hsl(203, 86%, 67%)
HSV	hsv(203, 59%, 95%)
CMYK	cmyk(59.3%, 22.2%, 0%, 4.7%)
CIE-LAB	lab(73.23, -11.44, -34.88)
CIE-LCH	lch(73.23, 36.70, 251.84°)
OKLab	oklab(76.41% -0.0627 -0.0976)
OKLCH	oklch(76.41% 0.116 237.3)
XYZ	xyz(39.5147, 45.5151, 91.4795)
Luminance	0.4552 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63BDF3 #F39963

analogous

#63F3E1 #63BDF3 #6375F3

triadic

#63BDF3 #F363BD #BDF363

tetradic

#63BDF3 #E163F3 #F39963 #75F363

square

#63BDF3 #E163F3 #F39963 #75F363

split-complementary

#63BDF3 #F36375 #F3E163

monochromatic

#1085CC #2AA5EF #63BDF3 #9CD5F7 #D5EDFC

Accessibility & contrast

On white

2.08

#63BDF3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.10

#63BDF3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BDF3

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63BDF3	#FFFFFF	#000000	##000000
##63BDF3	1.00	2.08	10.10	10.10
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.10	21.00	1.00	1.00
##000000	10.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4BCF6

Deuteranopia (green-blind)

#90ADF2

Tritanopia (blue-blind)

#00CBCF

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #63bdf3;
/* rgb */ color: rgb(99, 189, 243);
/* oklch */ color: oklch(76.4% 0.116 237.3);

Tailwind

colors: {
  custom: {
    50: '#9bd0f7',
    500: '#63bdf3',
    950: '#000000',
  },
}

SCSS

$custom: #63bdf3;
$custom-light: #9bd0f7;
$custom-dark: #000000;

JSON

{
  "hex": "#63bdf3",
  "rgb": {
    "r": 99,
    "g": 189,
    "b": 243
  },
  "hsl": {
    "h": 202.5,
    "s": 85.714,
    "l": 67.059
  },
  "oklch": {
    "l": 0.76414,
    "c": 0.11605,
    "h": 237.3
  },
  "luminance": 0.45519
}

Semantic roles & 50–950 ramp

primary

#63BDF3

secondary

#F0D3C2

accent

#5703E2

background

#FAFCFF

surface

#F4F9FE

border

#CED2D6

text

#0F1417

muted

#7F8285

Preview Lab

Preview with #63BDF3

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

Preview Lab → · Contrast checker → · Palette generator →