#646B89#646B89

#646B89 is a mid, muted blue. Relative luminance 0.150; OKLCH L 53.3% C 0.048 H 274.4°. Best body text is #FFFFFF at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#646B89
RGB	rgb(100, 107, 137)
HSL	hsl(229, 16%, 46%)
HSV	hsv(229, 27%, 54%)
CMYK	cmyk(27%, 21.9%, 0%, 46.3%)
CIE-LAB	lab(45.68, 4.52, -17.38)
CIE-LCH	lch(45.68, 17.96, 284.58°)
OKLab	oklab(53.33% 0.0037 -0.0478)
OKLCH	oklch(53.33% 0.048 274.4)
XYZ	xyz(15.0274, 15.0305, 25.7715)
Luminance	0.1503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646B89 #898264

analogous

#647E89 #646B89 #706489

triadic

#646B89 #89646B #6B8964

tetradic

#646B89 #89647E #898264 #648970

square

#646B89 #89647E #898264 #648970

split-complementary

#646B89 #897064 #7E8964

monochromatic

#303442 #4A4F66 #646B89 #858BA6 #A8ACBF

Accessibility & contrast

On white

5.24

#646B89 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#646B89 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646B89

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646B89	#FFFFFF	#000000	##FFFFFF
##646B89	1.00	5.24	4.01	5.24
#FFFFFF	5.24	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#626E8A

Deuteranopia (green-blind)

#606B88

Tritanopia (blue-blind)

#5B7175

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #646b89;
/* rgb */ color: rgb(100, 107, 137);
/* oklch */ color: oklch(53.3% 0.048 274.4);

Tailwind

colors: {
  custom: {
    50: '#9195ab',
    500: '#646b89',
    950: '#000000',
  },
}

SCSS

$custom: #646b89;
$custom-light: #9195ab;
$custom-dark: #000000;

JSON

{
  "hex": "#646b89",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 137
  },
  "hsl": {
    "h": 228.649,
    "s": 15.612,
    "l": 46.471
  },
  "oklch": {
    "l": 0.5333,
    "c": 0.0479,
    "h": 274.4
  },
  "luminance": 0.15031
}

Semantic roles & 50–950 ramp

primary

#646B89

secondary

#AEAB9B

accent

#AB6FB8

background

#F8F9FA

surface

#F0F1F4

border

#CBCBCE

text

#0C0D10

muted

#7D7E7F

Preview Lab

Preview with #646B89

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

Preview Lab → · Contrast checker → · Palette generator →