#63B1F1#63B1F1

#63B1F1 is a light, vivid cyan. Relative luminance 0.404; OKLCH L 73.7% C 0.121 H 245.2°. Best body text is #000000 at 9.09:1 contrast (WCAG AA passes).

Color values

HEX	#63B1F1
RGB	rgb(99, 177, 241)
HSL	hsl(207, 84%, 67%)
HSV	hsv(207, 59%, 95%)
CMYK	cmyk(58.9%, 26.6%, 0%, 5.5%)
CIE-LAB	lab(69.78, -5.54, -39.15)
CIE-LCH	lch(69.78, 39.54, 261.94°)
OKLab	oklab(73.66% -0.0507 -0.11)
OKLCH	oklch(73.66% 0.121 245.2)
XYZ	xyz(36.7391, 40.4444, 89.0725)
Luminance	0.4045 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B1F1 #F1A363

analogous

#63F1EA #63B1F1 #636AF1

triadic

#63B1F1 #F163B1 #B1F163

tetradic

#63B1F1 #EA63F1 #F1A363 #6AF163

square

#63B1F1 #EA63F1 #F1A363 #6AF163

split-complementary

#63B1F1 #F1636A #F1EA63

monochromatic

#1276C8 #2B95EC #63B1F1 #9BCDF6 #D3E9FB

Accessibility & contrast

On white

2.31

#63B1F1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.09

#63B1F1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B1F1

9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B1F1	#FFFFFF	#000000	##000000
##63B1F1	1.00	2.31	9.09	9.09
#FFFFFF	2.31	1.00	21.00	21.00
#000000	9.09	21.00	1.00	1.00
##000000	9.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95B2F4

Deuteranopia (green-blind)

#82A4F0

Tritanopia (blue-blind)

#00C0C7

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #63b1f1;
/* rgb */ color: rgb(99, 177, 241);
/* oklch */ color: oklch(73.7% 0.121 245.2);

Tailwind

colors: {
  custom: {
    50: '#9ac8f6',
    500: '#63b1f1',
    950: '#000000',
  },
}

SCSS

$custom: #63b1f1;
$custom-light: #9ac8f6;
$custom-dark: #000000;

JSON

{
  "hex": "#63b1f1",
  "rgb": {
    "r": 99,
    "g": 177,
    "b": 241
  },
  "hsl": {
    "h": 207.042,
    "s": 83.529,
    "l": 66.667
  },
  "oklch": {
    "l": 0.73662,
    "c": 0.12114,
    "h": 245.2
  },
  "luminance": 0.40448
}

Semantic roles & 50–950 ramp

primary

#63B1F1

secondary

#EFD6C1

accent

#6806E0

background

#FAFCFF

surface

#F3F8FE

border

#CDD1D6

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B1F1

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

Preview Lab → · Contrast checker → · Palette generator →