#646F97#646F97

#646F97 is a mid, moderate blue. Relative luminance 0.163; OKLCH L 54.8% C 0.064 H 272.3°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#646F97
RGB	rgb(100, 111, 151)
HSL	hsl(227, 20%, 49%)
HSV	hsv(227, 34%, 59%)
CMYK	cmyk(33.8%, 26.5%, 0%, 40.8%)
CIE-LAB	lab(47.38, 5.87, -23.07)
CIE-LCH	lch(47.38, 23.80, 284.27°)
OKLab	oklab(54.85% 0.0026 -0.0639)
OKLCH	oklch(54.85% 0.064 272.3)
XYZ	xyz(16.5243, 16.3120, 31.5500)
Luminance	0.1631 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646F97 #978C64

analogous

#648997 #646F97 #736497

triadic

#646F97 #97646F #6F9764

tetradic

#646F97 #976489 #978C64 #649773

square

#646F97 #976489 #978C64 #649773

split-complementary

#646F97 #977364 #899764

monochromatic

#33394D #4C5472 #646F97 #8891B0 #ADB3C9

Accessibility & contrast

On white

4.93

#646F97 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#646F97 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646F97

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646F97	#FFFFFF	#000000	##FFFFFF
##646F97	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#627399

Deuteranopia (green-blind)

#5E6E96

Tritanopia (blue-blind)

#56777D

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #646f97;
/* rgb */ color: rgb(100, 111, 151);
/* oklch */ color: oklch(54.8% 0.064 272.3);

Tailwind

colors: {
  custom: {
    50: '#9198b5',
    500: '#646f97',
    950: '#000000',
  },
}

SCSS

$custom: #646f97;
$custom-light: #9198b5;
$custom-dark: #000000;

JSON

{
  "hex": "#646f97",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 151
  },
  "hsl": {
    "h": 227.059,
    "s": 20.319,
    "l": 49.216
  },
  "oklch": {
    "l": 0.54846,
    "c": 0.06398,
    "h": 272.3
  },
  "luminance": 0.16313
}

Semantic roles & 50–950 ramp

primary

#646F97

secondary

#B7B2A0

accent

#AB6BBD

background

#F9F9FB

surface

#F1F2F6

border

#CBCCD0

text

#0D0D11

muted

#7E7E80

Preview Lab

Preview with #646F97

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

Preview Lab → · Contrast checker → · Palette generator →