#63B3F1#63B3F1

#63B3F1 is a light, moderate cyan. Relative luminance 0.412; OKLCH L 74.1% C 0.120 H 243.8°. Best body text is #000000 at 9.25:1 contrast (WCAG AA passes).

Color values

HEX	#63B3F1
RGB	rgb(99, 179, 241)
HSL	hsl(206, 84%, 67%)
HSV	hsv(206, 59%, 95%)
CMYK	cmyk(58.9%, 25.7%, 0%, 5.5%)
CIE-LAB	lab(70.34, -6.64, -38.27)
CIE-LCH	lch(70.34, 38.85, 260.16°)
OKLab	oklab(74.1% -0.0528 -0.1075)
OKLCH	oklch(74.1% 0.12 243.8)
XYZ	xyz(37.1370, 41.2403, 89.2051)
Luminance	0.4124 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B3F1 #F1A163

analogous

#63F1E8 #63B3F1 #636CF1

triadic

#63B3F1 #F163B3 #B3F163

tetradic

#63B3F1 #E863F1 #F1A163 #6CF163

square

#63B3F1 #E863F1 #F1A163 #6CF163

split-complementary

#63B3F1 #F1636C #F1E863

monochromatic

#1278C8 #2B98EC #63B3F1 #9BCEF6 #D3EAFB

Accessibility & contrast

On white

2.27

#63B3F1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.25

#63B3F1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B3F1

9.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B3F1	#FFFFFF	#000000	##000000
##63B3F1	1.00	2.27	9.25	9.25
#FFFFFF	2.27	1.00	21.00	21.00
#000000	9.25	21.00	1.00	1.00
##000000	9.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98B4F4

Deuteranopia (green-blind)

#85A6F0

Tritanopia (blue-blind)

#00C2C8

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #63b3f1;
/* rgb */ color: rgb(99, 179, 241);
/* oklch */ color: oklch(74.1% 0.120 243.8);

Tailwind

colors: {
  custom: {
    50: '#9ac9f6',
    500: '#63b3f1',
    950: '#000000',
  },
}

SCSS

$custom: #63b3f1;
$custom-light: #9ac9f6;
$custom-dark: #000000;

JSON

{
  "hex": "#63b3f1",
  "rgb": {
    "r": 99,
    "g": 179,
    "b": 241
  },
  "hsl": {
    "h": 206.197,
    "s": 83.529,
    "l": 66.667
  },
  "oklch": {
    "l": 0.74103,
    "c": 0.11977,
    "h": 243.8
  },
  "luminance": 0.41244
}

Semantic roles & 50–950 ramp

primary

#63B3F1

secondary

#EFD5C1

accent

#6506E0

background

#FAFCFF

surface

#F3F8FE

border

#CDD1D6

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B3F1

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

Preview Lab → · Contrast checker → · Palette generator →