#636FF3#636FF3

#636FF3 is a mid, vivid blue. Relative luminance 0.205; OKLCH L 60.3% C 0.196 H 275.0°. Best body text is #000000 at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#636FF3
RGB	rgb(99, 111, 243)
HSL	hsl(235, 86%, 67%)
HSV	hsv(235, 59%, 95%)
CMYK	cmyk(59.3%, 54.3%, 0%, 4.7%)
CIE-LAB	lab(52.39, 33.92, -67.90)
CIE-LCH	lch(52.39, 75.90, 296.55°)
OKLab	oklab(60.28% 0.017 -0.1948)
OKLCH	oklch(60.28% 0.196 275)
XYZ	xyz(27.0024, 20.4905, 87.3088)
Luminance	0.2049 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636FF3 #F3E763

analogous

#63B7F3 #636FF3 #9F63F3

triadic

#636FF3 #F3636F #6FF363

tetradic

#636FF3 #F363B7 #F3E763 #63F39F

square

#636FF3 #F363B7 #F3E763 #63F39F

split-complementary

#636FF3 #F39F63 #B7F363

monochromatic

#101FCC #2A3BEF #636FF3 #9CA3F7 #D5D8FC

Accessibility & contrast

On white

4.12

#636FF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.10

#636FF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636FF3

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636FF3	#FFFFFF	#000000	##000000
##636FF3	1.00	4.12	5.10	5.10
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.10	21.00	1.00	1.00
##000000	5.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0983F8

Deuteranopia (green-blind)

#0077F0

Tritanopia (blue-blind)

#008EA6

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #636ff3;
/* rgb */ color: rgb(99, 111, 243);
/* oklch */ color: oklch(60.3% 0.196 275.0);

Tailwind

colors: {
  custom: {
    50: '#9c98f8',
    500: '#636ff3',
    950: '#000000',
  },
}

SCSS

$custom: #636ff3;
$custom-light: #9c98f8;
$custom-dark: #000000;

JSON

{
  "hex": "#636ff3",
  "rgb": {
    "r": 99,
    "g": 111,
    "b": 243
  },
  "hsl": {
    "h": 235,
    "s": 85.714,
    "l": 67.059
  },
  "oklch": {
    "l": 0.60284,
    "c": 0.19553,
    "h": 275
  },
  "luminance": 0.20493
}

Semantic roles & 50–950 ramp

primary

#636FF3

secondary

#F0ECC2

accent

#D003E2

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636FF3

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

Preview Lab → · Contrast checker → · Palette generator →