#646FBE#646FBE

#646FBE is a mid, vivid blue. Relative luminance 0.178; OKLCH L 56.9% C 0.122 H 275.8°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#646FBE
RGB	rgb(100, 111, 190)
HSL	hsl(233, 41%, 57%)
HSV	hsv(233, 47%, 75%)
CMYK	cmyk(47.4%, 41.6%, 0%, 25.5%)
CIE-LAB	lab(49.25, 17.30, -42.90)
CIE-LCH	lch(49.25, 46.26, 291.97°)
OKLab	oklab(56.9% 0.0124 -0.1214)
OKLCH	oklch(56.9% 0.122 275.8)
XYZ	xyz(20.2314, 17.7948, 51.0739)
Luminance	0.1780 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FBE #BEB364

analogous

#649CBE #646FBE #8664BE

triadic

#646FBE #BE646F #6FBE64

tetradic

#646FBE #BE649C #BEB364 #64BE86

square

#646FBE #BE649C #BEB364 #64BE86

split-complementary

#646FBE #BE8664 #9CBE64

monochromatic

#323A76 #444FA1 #646FBE #8F97D0 #BABFE2

Accessibility & contrast

On white

4.61

#646FBE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#646FBE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646FBE

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FBE	#FFFFFF	#000000	##FFFFFF
##646FBE	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5079C1

Deuteranopia (green-blind)

#4972BC

Tritanopia (blue-blind)

#437F8D

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #646fbe;
/* rgb */ color: rgb(100, 111, 190);
/* oklch */ color: oklch(56.9% 0.122 275.8);

Tailwind

colors: {
  custom: {
    50: '#9598d2',
    500: '#646fbe',
    950: '#000000',
  },
}

SCSS

$custom: #646fbe;
$custom-light: #9598d2;
$custom-dark: #000000;

JSON

{
  "hex": "#646fbe",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 190
  },
  "hsl": {
    "h": 232.667,
    "s": 40.909,
    "l": 56.863
  },
  "oklch": {
    "l": 0.56896,
    "c": 0.12199,
    "h": 275.8
  },
  "luminance": 0.17796
}

Semantic roles & 50–950 ramp

primary

#646FBE

secondary

#D1CDAD

accent

#C257D1

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0E0D14

muted

#7E7E82

Preview Lab

Preview with #646FBE

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

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