#646EB6#646EB6

#646EB6 is a mid, moderate blue. Relative luminance 0.172; OKLCH L 56.2% C 0.112 H 276.2°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#646EB6
RGB	rgb(100, 110, 182)
HSL	hsl(233, 36%, 55%)
HSV	hsv(233, 45%, 71%)
CMYK	cmyk(45.1%, 39.6%, 0%, 28.6%)
CIE-LAB	lab(48.56, 15.48, -39.37)
CIE-LCH	lch(48.56, 42.30, 291.46°)
OKLab	oklab(56.23% 0.0121 -0.111)
OKLCH	oklch(56.23% 0.112 276.2)
XYZ	xyz(19.2724, 17.2376, 46.5586)
Luminance	0.1724 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EB6 #B6AC64

analogous

#6497B6 #646EB6 #8364B6

triadic

#646EB6 #B6646E #6EB664

tetradic

#646EB6 #B66497 #B6AC64 #64B683

square

#646EB6 #B66497 #B6AC64 #64B683

split-complementary

#646EB6 #B68364 #97B664

monochromatic

#333A6C #475096 #646EB6 #8E95CA #B7BCDD

Accessibility & contrast

On white

4.72

#646EB6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#646EB6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646EB6

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EB6	#FFFFFF	#000000	##FFFFFF
##646EB6	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5477B9

Deuteranopia (green-blind)

#4D70B4

Tritanopia (blue-blind)

#487D89

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #646eb6;
/* rgb */ color: rgb(100, 110, 182);
/* oklch */ color: oklch(56.2% 0.112 276.2);

Tailwind

colors: {
  custom: {
    50: '#9497cc',
    500: '#646eb6',
    950: '#000000',
  },
}

SCSS

$custom: #646eb6;
$custom-light: #9497cc;
$custom-dark: #000000;

JSON

{
  "hex": "#646eb6",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 182
  },
  "hsl": {
    "h": 232.683,
    "s": 35.965,
    "l": 55.294
  },
  "oklch": {
    "l": 0.56232,
    "c": 0.11169,
    "h": 276.2
  },
  "luminance": 0.17239
}

Semantic roles & 50–950 ramp

primary

#646EB6

secondary

#CCC8AA

accent

#BE5CCC

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #646EB6

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

Preview Lab → · Contrast checker → · Palette generator →