#636EEF#636EEF

#636EEF is a mid, vivid blue. Relative luminance 0.200; OKLCH L 59.8% C 0.192 H 275.3°. Best body text is #000000 at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#636EEF
RGB	rgb(99, 110, 239)
HSL	hsl(235, 81%, 66%)
HSV	hsv(235, 59%, 94%)
CMYK	cmyk(58.6%, 54%, 0%, 6.3%)
CIE-LAB	lab(51.88, 33.23, -66.49)
CIE-LCH	lch(51.88, 74.34, 296.56°)
OKLab	oklab(59.82% 0.0178 -0.1907)
OKLCH	oklch(59.82% 0.192 275.3)
XYZ	xyz(26.2964, 20.0345, 84.1259)
Luminance	0.2004 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636EEF #EFE463

analogous

#63B4EF #636EEF #9E63EF

triadic

#636EEF #EF636E #6EEF63

tetradic

#636EEF #EF63B4 #EFE463 #63EF9E

square

#636EEF #EF63B4 #EFE463 #63EF9E

split-complementary

#636EEF #EF9E63 #B4EF63

monochromatic

#1422C4 #2B3AE9 #636EEF #9BA2F5 #D2D5FA

Accessibility & contrast

On white

4.19

#636EEF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.01

#636EEF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636EEF

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636EEF	#FFFFFF	#000000	##000000
##636EEF	1.00	4.19	5.01	5.01
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.01	21.00	1.00	1.00
##000000	5.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1382F3

Deuteranopia (green-blind)

#0076EC

Tritanopia (blue-blind)

#008CA4

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #636eef;
/* rgb */ color: rgb(99, 110, 239);
/* oklch */ color: oklch(59.8% 0.192 275.3);

Tailwind

colors: {
  custom: {
    50: '#9b97f5',
    500: '#636eef',
    950: '#000000',
  },
}

SCSS

$custom: #636eef;
$custom-light: #9b97f5;
$custom-dark: #000000;

JSON

{
  "hex": "#636eef",
  "rgb": {
    "r": 99,
    "g": 110,
    "b": 239
  },
  "hsl": {
    "h": 235.286,
    "s": 81.395,
    "l": 66.275
  },
  "oklch": {
    "l": 0.59817,
    "c": 0.1915,
    "h": 275.3
  },
  "luminance": 0.20037
}

Semantic roles & 50–950 ramp

primary

#636EEF

secondary

#EEEAC0

accent

#CD08DE

background

#FAF9FF

surface

#F4F2FE

border

#CECCD6

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636EEF

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

Preview Lab → · Contrast checker → · Palette generator →