#646999#646999

#646999 is a mid, moderate blue. Relative luminance 0.151; OKLCH L 53.6% C 0.075 H 279.0°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#646999
RGB	rgb(100, 105, 153)
HSL	hsl(234, 21%, 50%)
HSV	hsv(234, 35%, 60%)
CMYK	cmyk(34.6%, 31.4%, 0%, 40%)
CIE-LAB	lab(45.79, 10.07, -26.72)
CIE-LCH	lch(45.79, 28.56, 290.65°)
OKLab	oklab(53.64% 0.0117 -0.0744)
OKLCH	oklch(53.64% 0.075 279)
XYZ	xyz(16.0553, 15.1118, 32.2018)
Luminance	0.1511 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646999 #999464

analogous

#648499 #646999 #7A6499

triadic

#646999 #996469 #699964

tetradic

#646999 #996484 #999464 #64997A

square

#646999 #996484 #999464 #64997A

split-complementary

#646999 #997A64 #849964

monochromatic

#34364F #4C5074 #646999 #898CB2 #AEB0CA

Accessibility & contrast

On white

5.22

#646999 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#646999 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646999

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646999	#FFFFFF	#000000	##FFFFFF
##646999	1.00	5.22	4.02	5.22
#FFFFFF	5.22	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A6E9B

Deuteranopia (green-blind)

#576B98

Tritanopia (blue-blind)

#56727A

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #646999;
/* rgb */ color: rgb(100, 105, 153);
/* oklch */ color: oklch(53.6% 0.075 279.0);

Tailwind

colors: {
  custom: {
    50: '#9293b7',
    500: '#646999',
    950: '#000000',
  },
}

SCSS

$custom: #646999;
$custom-light: #9293b7;
$custom-dark: #000000;

JSON

{
  "hex": "#646999",
  "rgb": {
    "r": 100,
    "g": 105,
    "b": 153
  },
  "hsl": {
    "h": 234.34,
    "s": 20.949,
    "l": 49.608
  },
  "oklch": {
    "l": 0.53638,
    "c": 0.07531,
    "h": 279
  },
  "luminance": 0.15112
}

Semantic roles & 50–950 ramp

primary

#646999

secondary

#B9B6A0

accent

#B66ABE

background

#F9F9FB

surface

#F1F1F6

border

#CBCBD0

text

#0D0D11

muted

#7E7E80

Preview Lab

Preview with #646999

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

Preview Lab → · Contrast checker → · Palette generator →