#646BB7#646BB7

#646BB7 is a mid, moderate blue. Relative luminance 0.166; OKLCH L 55.7% C 0.117 H 277.9°. Best body text is #FFFFFF at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#646BB7
RGB	rgb(100, 107, 183)
HSL	hsl(235, 37%, 55%)
HSV	hsv(235, 45%, 72%)
CMYK	cmyk(45.4%, 41.5%, 0%, 28.2%)
CIE-LAB	lab(47.81, 17.62, -41.14)
CIE-LCH	lch(47.81, 44.75, 293.19°)
OKLab	oklab(55.67% 0.0161 -0.1162)
OKLCH	oklch(55.67% 0.117 277.9)
XYZ	xyz(19.0579, 16.6427, 46.9987)
Luminance	0.1664 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BB7 #B7B064

analogous

#6494B7 #646BB7 #8664B7

triadic

#646BB7 #B7646B #6BB764

tetradic

#646BB7 #B76494 #B7B064 #64B786

square

#646BB7 #B76494 #B7B064 #64B786

split-complementary

#646BB7 #B78664 #94B764

monochromatic

#33386E #464D97 #646BB7 #8E93CA #B8BBDE

Accessibility & contrast

On white

4.85

#646BB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.33

#646BB7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646BB7

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BB7	#FFFFFF	#000000	##FFFFFF
##646BB7	1.00	4.85	4.33	4.85
#FFFFFF	4.85	1.00	21.00	1.00
#000000	4.33	21.00	1.00	21.00
##FFFFFF	4.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E75BA

Deuteranopia (green-blind)

#486EB5

Tritanopia (blue-blind)

#487B88

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #646bb7;
/* rgb */ color: rgb(100, 107, 183);
/* oklch */ color: oklch(55.7% 0.117 277.9);

Tailwind

colors: {
  custom: {
    50: '#9495cd',
    500: '#646bb7',
    950: '#000000',
  },
}

SCSS

$custom: #646bb7;
$custom-light: #9495cd;
$custom-dark: #000000;

JSON

{
  "hex": "#646bb7",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 183
  },
  "hsl": {
    "h": 234.94,
    "s": 36.564,
    "l": 55.49
  },
  "oklch": {
    "l": 0.55674,
    "c": 0.11733,
    "h": 277.9
  },
  "luminance": 0.16644
}

Semantic roles & 50–950 ramp

primary

#646BB7

secondary

#CDCAAA

accent

#C35BCD

background

#F9F9FC

surface

#F2F1F9

border

#CCCBD2

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #646BB7

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

Preview Lab → · Contrast checker → · Palette generator →