#646DD7#646DD7

#646DD7 is a mid, vivid blue. Relative luminance 0.186; OKLCH L 58.1% C 0.160 H 276.5°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#646DD7
RGB	rgb(100, 109, 215)
HSL	hsl(235, 59%, 62%)
HSV	hsv(235, 53%, 84%)
CMYK	cmyk(53.5%, 49.3%, 0%, 15.7%)
CIE-LAB	lab(50.16, 26.35, -55.75)
CIE-LCH	lch(50.16, 61.66, 295.30°)
OKLab	oklab(58.05% 0.0182 -0.159)
OKLCH	oklch(58.05% 0.16 276.5)
XYZ	xyz(22.9860, 18.5514, 66.6463)
Luminance	0.1855 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DD7 #D7CE64

analogous

#64A7D7 #646DD7 #9564D7

triadic

#646DD7 #D7646D #6DD764

tetradic

#646DD7 #D764A7 #D7CE64 #64D795

square

#646DD7 #D764A7 #D7CE64 #64D795

split-complementary

#646DD7 #D79564 #A7D764

monochromatic

#283099 #3440CA #646DD7 #959BE4 #C5C9F0

Accessibility & contrast

On white

4.46

#646DD7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#646DD7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646DD7

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DD7	#FFFFFF	#000000	##000000
##646DD7	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#397CDB

Deuteranopia (green-blind)

#2A73D5

Tritanopia (blue-blind)

#2D8598

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #646dd7;
/* rgb */ color: rgb(100, 109, 215);
/* oklch */ color: oklch(58.1% 0.160 276.5);

Tailwind

colors: {
  custom: {
    50: '#9896e4',
    500: '#646dd7',
    950: '#000000',
  },
}

SCSS

$custom: #646dd7;
$custom-light: #9896e4;
$custom-dark: #000000;

JSON

{
  "hex": "#646dd7",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 215
  },
  "hsl": {
    "h": 235.304,
    "s": 58.974,
    "l": 61.765
  },
  "oklch": {
    "l": 0.58053,
    "c": 0.16008,
    "h": 276.5
  },
  "luminance": 0.18553
}

Semantic roles & 50–950 ramp

primary

#646DD7

secondary

#E1DDB6

accent

#B91FC7

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #646DD7

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

Preview Lab → · Contrast checker → · Palette generator →