#636EE3#636EE3

#636EE3 is a mid, vivid blue. Relative luminance 0.194; OKLCH L 59.0% C 0.175 H 275.6°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#636EE3
RGB	rgb(99, 110, 227)
HSL	hsl(235, 70%, 64%)
HSV	hsv(235, 56%, 89%)
CMYK	cmyk(56.4%, 51.5%, 0%, 11%)
CIE-LAB	lab(51.09, 29.37, -61.03)
CIE-LCH	lch(51.09, 67.73, 295.70°)
OKLab	oklab(58.98% 0.0171 -0.1746)
OKLCH	oklch(58.98% 0.175 275.6)
XYZ	xyz(24.5822, 19.3488, 75.0975)
Luminance	0.1935 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636EE3 #E3D863

analogous

#63AEE3 #636EE3 #9863E3

triadic

#636EE3 #E3636E #6EE363

tetradic

#636EE3 #E363AE #E3D863 #63E398

square

#636EE3 #E363AE #E3D863 #63E398

split-complementary

#636EE3 #E39863 #AEE363

monochromatic

#1F2BAD #2F3EDA #636EE3 #979EEC #CBCEF6

Accessibility & contrast

On white

4.31

#636EE3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#636EE3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636EE3

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636EE3	#FFFFFF	#000000	##000000
##636EE3	1.00	4.31	4.87	4.87
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D7FE7

Deuteranopia (green-blind)

#0F74E1

Tritanopia (blue-blind)

#15899E

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #636ee3;
/* rgb */ color: rgb(99, 110, 227);
/* oklch */ color: oklch(59.0% 0.175 275.6);

Tailwind

colors: {
  custom: {
    50: '#9997ec',
    500: '#636ee3',
    950: '#000000',
  },
}

SCSS

$custom: #636ee3;
$custom-light: #9997ec;
$custom-dark: #000000;

JSON

{
  "hex": "#636ee3",
  "rgb": {
    "r": 99,
    "g": 110,
    "b": 227
  },
  "hsl": {
    "h": 234.844,
    "s": 69.565,
    "l": 63.922
  },
  "oklch": {
    "l": 0.5898,
    "c": 0.17543,
    "h": 275.6
  },
  "luminance": 0.19351
}

Semantic roles & 50–950 ramp

primary

#636EE3

secondary

#E7E3BA

accent

#C114D2

background

#FAF9FE

surface

#F3F2FD

border

#CDCCD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #636EE3

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

Preview Lab → · Contrast checker → · Palette generator →