#637FF6#637FF6

#637FF6 is a light, vivid blue. Relative luminance 0.245; OKLCH L 63.5% C 0.180 H 270.6°. Best body text is #000000 at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#637FF6
RGB	rgb(99, 127, 246)
HSL	hsl(229, 89%, 68%)
HSV	hsv(229, 60%, 96%)
CMYK	cmyk(59.8%, 48.4%, 0%, 3.5%)
CIE-LAB	lab(56.57, 25.22, -62.82)
CIE-LCH	lch(56.57, 67.69, 291.87°)
OKLab	oklab(63.5% 0.0018 -0.1797)
OKLCH	oklch(63.5% 0.18 270.6)
XYZ	xyz(29.3640, 24.4828, 90.3492)
Luminance	0.2449 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637FF6 #F6DA63

analogous

#63C9F6 #637FF6 #9063F6

triadic

#637FF6 #F6637F #7FF663

tetradic

#637FF6 #F663C9 #F6DA63 #63F690

square

#637FF6 #F663C9 #F6DA63 #63F690

split-complementary

#637FF6 #F69063 #C9F663

monochromatic

#0C32D2 #2950F3 #637FF6 #9DAEF9 #D7DEFD

Accessibility & contrast

On white

3.56

#637FF6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.90

#637FF6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #637FF6

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637FF6	#FFFFFF	#000000	##000000
##637FF6	1.00	3.56	5.90	5.90
#FFFFFF	3.56	1.00	21.00	21.00
#000000	5.90	21.00	1.00	1.00
##000000	5.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#418FFA

Deuteranopia (green-blind)

#2581F4

Tritanopia (blue-blind)

#009AAF

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #637ff6;
/* rgb */ color: rgb(99, 127, 246);
/* oklch */ color: oklch(63.5% 0.180 270.6);

Tailwind

colors: {
  custom: {
    50: '#9ba3fa',
    500: '#637ff6',
    950: '#000000',
  },
}

SCSS

$custom: #637ff6;
$custom-light: #9ba3fa;
$custom-dark: #000000;

JSON

{
  "hex": "#637ff6",
  "rgb": {
    "r": 99,
    "g": 127,
    "b": 246
  },
  "hsl": {
    "h": 228.571,
    "s": 89.091,
    "l": 67.647
  },
  "oklch": {
    "l": 0.63495,
    "c": 0.1797,
    "h": 270.6
  },
  "luminance": 0.24485
}

Semantic roles & 50–950 ramp

primary

#637FF6

secondary

#F1E9C4

accent

#BA00E6

background

#FAFAFF

surface

#F4F3FF

border

#CECDD7

text

#0F0F17

muted

#7F7F85

Preview Lab

Preview with #637FF6

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

Preview Lab → · Contrast checker → · Palette generator →