#646EC6#646EC6

#646EC6 is a mid, vivid blue. Relative luminance 0.179; OKLCH L 57.2% C 0.135 H 276.4°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#646EC6
RGB	rgb(100, 110, 198)
HSL	hsl(234, 46%, 58%)
HSV	hsv(234, 49%, 78%)
CMYK	cmyk(49.5%, 44.4%, 0%, 22.4%)
CIE-LAB	lab(49.42, 20.39, -47.23)
CIE-LCH	lch(49.42, 51.44, 293.35°)
OKLab	oklab(57.17% 0.015 -0.134)
OKLCH	oklch(57.17% 0.135 276.4)
XYZ	xyz(21.0213, 17.9372, 55.7697)
Luminance	0.1794 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EC6 #C6BC64

analogous

#649FC6 #646EC6 #8B64C6

triadic

#646EC6 #C6646E #6EC664

tetradic

#646EC6 #C6649F #C6BC64 #64C68B

square

#646EC6 #C6649F #C6BC64 #64C68B

split-complementary

#646EC6 #C68B64 #9FC664

monochromatic

#2F3780 #404BAD #646EC6 #9198D6 #BDC2E7

Accessibility & contrast

On white

4.58

#646EC6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#646EC6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646EC6

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EC6	#FFFFFF	#000000	##000000
##646EC6	1.00	4.58	4.59	4.59
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A7AC9

Deuteranopia (green-blind)

#4172C4

Tritanopia (blue-blind)

#3D8190

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #646ec6;
/* rgb */ color: rgb(100, 110, 198);
/* oklch */ color: oklch(57.2% 0.135 276.4);

Tailwind

colors: {
  custom: {
    50: '#9697d8',
    500: '#646ec6',
    950: '#000000',
  },
}

SCSS

$custom: #646ec6;
$custom-light: #9697d8;
$custom-dark: #000000;

JSON

{
  "hex": "#646ec6",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 198
  },
  "hsl": {
    "h": 233.878,
    "s": 46.226,
    "l": 58.431
  },
  "oklch": {
    "l": 0.57171,
    "c": 0.13485,
    "h": 276.4
  },
  "luminance": 0.17938
}

Semantic roles & 50–950 ramp

primary

#646EC6

secondary

#D6D2AF

accent

#C852D6

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646EC6

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

Preview Lab → · Contrast checker → · Palette generator →