#646FBC#646FBC

#646FBC is a mid, moderate blue. Relative luminance 0.177; OKLCH L 56.8% C 0.119 H 275.8°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#646FBC
RGB	rgb(100, 111, 188)
HSL	hsl(233, 40%, 56%)
HSV	hsv(233, 47%, 74%)
CMYK	cmyk(46.8%, 41%, 0%, 26.3%)
CIE-LAB	lab(49.14, 16.69, -41.92)
CIE-LCH	lch(49.14, 45.12, 291.71°)
OKLab	oklab(56.78% 0.012 -0.1185)
OKLCH	oklch(56.78% 0.119 275.8)
XYZ	xyz(20.0143, 17.7080, 49.9306)
Luminance	0.1771 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FBC #BCB164

analogous

#649BBC #646FBC #8564BC

triadic

#646FBC #BC646F #6FBC64

tetradic

#646FBC #BC649B #BCB164 #64BC85

square

#646FBC #BC649B #BCB164 #64BC85

split-complementary

#646FBC #BC8564 #9BBC64

monochromatic

#323A74 #44509E #646FBC #8F97CE #B9BEE1

Accessibility & contrast

On white

4.62

#646FBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#646FBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646FBC

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FBC	#FFFFFF	#000000	##FFFFFF
##646FBC	1.00	4.62	4.54	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5278BF

Deuteranopia (green-blind)

#4A71BA

Tritanopia (blue-blind)

#447F8C

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #646fbc;
/* rgb */ color: rgb(100, 111, 188);
/* oklch */ color: oklch(56.8% 0.119 275.8);

Tailwind

colors: {
  custom: {
    50: '#9598d0',
    500: '#646fbc',
    950: '#000000',
  },
}

SCSS

$custom: #646fbc;
$custom-light: #9598d0;
$custom-dark: #000000;

JSON

{
  "hex": "#646fbc",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 188
  },
  "hsl": {
    "h": 232.5,
    "s": 39.64,
    "l": 56.471
  },
  "oklch": {
    "l": 0.5678,
    "c": 0.11909,
    "h": 275.8
  },
  "luminance": 0.17709
}

Semantic roles & 50–950 ramp

primary

#646FBC

secondary

#D0CBAC

accent

#C158D0

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0E0D14

muted

#7E7E82

Preview Lab

Preview with #646FBC

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

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