#637FE2#637FE2

#637FE2 is a light, vivid blue. Relative luminance 0.233; OKLCH L 62.2% C 0.152 H 269.7°. Best body text is #000000 at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#637FE2
RGB	rgb(99, 127, 226)
HSL	hsl(227, 69%, 64%)
HSV	hsv(227, 56%, 89%)
CMYK	cmyk(56.2%, 43.8%, 0%, 11.4%)
CIE-LAB	lab(55.40, 18.71, -53.56)
CIE-LCH	lch(55.40, 56.73, 289.25°)
OKLab	oklab(62.23% -0.0009 -0.1525)
OKLCH	oklch(62.23% 0.152 269.7)
XYZ	xyz(26.4579, 23.3204, 75.0438)
Luminance	0.2332 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637FE2 #E2C663

analogous

#63BEE2 #637FE2 #8663E2

triadic

#637FE2 #E2637F #7FE263

tetradic

#637FE2 #E263BE #E2C663 #63E286

square

#637FE2 #E263BE #E2C663 #63E286

split-complementary

#637FE2 #E28663 #BEE263

monochromatic

#203EAB #2F55D8 #637FE2 #97A9EC #CAD4F5

Accessibility & contrast

On white

3.71

#637FE2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.66

#637FE2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #637FE2

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637FE2	#FFFFFF	#000000	##000000
##637FE2	1.00	3.71	5.66	5.66
#FFFFFF	3.71	1.00	21.00	21.00
#000000	5.66	21.00	1.00	1.00
##000000	5.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#538BE6

Deuteranopia (green-blind)

#427FE0

Tritanopia (blue-blind)

#0E95A5

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #637fe2;
/* rgb */ color: rgb(99, 127, 226);
/* oklch */ color: oklch(62.2% 0.152 269.7);

Tailwind

colors: {
  custom: {
    50: '#98a3ec',
    500: '#637fe2',
    950: '#000000',
  },
}

SCSS

$custom: #637fe2;
$custom-light: #98a3ec;
$custom-dark: #000000;

JSON

{
  "hex": "#637fe2",
  "rgb": {
    "r": 99,
    "g": 127,
    "b": 226
  },
  "hsl": {
    "h": 226.772,
    "s": 68.649,
    "l": 63.725
  },
  "oklch": {
    "l": 0.6223,
    "c": 0.15247,
    "h": 269.7
  },
  "luminance": 0.23322
}

Semantic roles & 50–950 ramp

primary

#637FE2

secondary

#E7DDBA

accent

#A715D1

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0F0F16

muted

#7E7F84

Preview Lab

Preview with #637FE2

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

Preview Lab → · Contrast checker → · Palette generator →