#646178#646178

#646178 is a mid, muted blue. Relative luminance 0.126; OKLCH L 50.4% C 0.036 H 291.0°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#646178
RGB	rgb(100, 97, 120)
HSL	hsl(248, 11%, 43%)
HSV	hsv(248, 19%, 47%)
CMYK	cmyk(16.7%, 19.2%, 0%, 52.9%)
CIE-LAB	lab(42.18, 6.32, -12.47)
CIE-LCH	lch(42.18, 13.98, 296.88°)
OKLab	oklab(50.39% 0.013 -0.0339)
OKLCH	oklch(50.39% 0.036 291)
XYZ	xyz(12.9196, 12.6147, 19.5199)
Luminance	0.1262 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646178 #757861

analogous

#616A78 #646178 #6F6178

triadic

#646178 #786461 #617864

tetradic

#646178 #78616A #757861 #61786F

square

#646178 #78616A #757861 #61786F

split-complementary

#646178 #786F61 #6A7861

monochromatic

#2C2A34 #484656 #646178 #827F97 #A3A1B3

Accessibility & contrast

On white

5.96

#646178 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#646178 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646178

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646178	#FFFFFF	#000000	##FFFFFF
##646178	1.00	5.96	3.52	5.96
#FFFFFF	5.96	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C6479

Deuteranopia (green-blind)

#5C6377

Tritanopia (blue-blind)

#606569

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #646178;
/* rgb */ color: rgb(100, 97, 120);
/* oklch */ color: oklch(50.4% 0.036 291.0);

Tailwind

colors: {
  custom: {
    50: '#908d9f',
    500: '#646178',
    950: '#000000',
  },
}

SCSS

$custom: #646178;
$custom-light: #908d9f;
$custom-dark: #000000;

JSON

{
  "hex": "#646178",
  "rgb": {
    "r": 100,
    "g": 97,
    "b": 120
  },
  "hsl": {
    "h": 247.826,
    "s": 10.599,
    "l": 42.549
  },
  "oklch": {
    "l": 0.50389,
    "c": 0.03634,
    "h": 291
  },
  "luminance": 0.12615
}

Semantic roles & 50–950 ramp

primary

#646178

secondary

#A0A293

accent

#B474AB

background

#F8F8F9

surface

#F0F0F2

border

#CBCBCC

text

#0C0C0E

muted

#7D7D7E

Preview Lab

Preview with #646178

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

Preview Lab → · Contrast checker → · Palette generator →