#644BF1#644BF1

#644BF1 is a mid, highly saturated blue. Relative luminance 0.141; OKLCH L 54.4% C 0.235 H 282.1°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX#644BF1
RGBrgb(100, 75, 241)
HSLhsl(249, 86%, 62%)
HSVhsv(249, 69%, 95%)
CMYKcmyk(58.5%, 68.9%, 0%, 5.5%)
CIE-LABlab(44.36, 54.27, -79.85)
CIE-LCHlch(44.36, 96.55, 304.21°)
OKLaboklab(54.38% 0.0492 -0.23)
OKLCHoklch(54.38% 0.235 282.1)
XYZxyz(23.6438, 14.0907, 84.6759)
Luminance0.1409 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#644BF1 #D8F14B
analogous
#4B85F1 #644BF1 #B74BF1
triadic
#644BF1 #F1644B #4BF164
tetradic
#644BF1 #F14B85 #D8F14B #4BF1B7
square
#644BF1 #F14B85 #D8F14B #4BF1B7
split-complementary
#644BF1 #F1B74B #85F14B
monochromatic
#270EB4 #3312EC #644BF1 #9584F5 #C6BDFA

Accessibility & contrast

On white

5.50
#644BF1 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.82
#644BF1 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #644BF1
5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##644BF1#FFFFFF#000000##FFFFFF
##644BF11.005.503.825.50
#FFFFFF5.501.0021.001.00
#0000003.8221.001.0021.00
##FFFFFF5.501.0021.001.00

Color blindness preview

Protanopia (red-blind)
#006EF6
Deuteranopia (green-blind)
#0063EE
Tritanopia (blue-blind)
#007799
Achromatopsia (no color)
#696969

Design tokens & code

CSS
--color: #644bf1;
/* rgb */ color: rgb(100, 75, 241);
/* oklch */ color: oklch(54.4% 0.235 282.1);
Tailwind
colors: {
  custom: {
    50: '#9e80f7',
    500: '#644bf1',
    950: '#000000',
  },
}
SCSS
$custom: #644bf1;
$custom-light: #9e80f7;
$custom-dark: #000000;
JSON
{
  "hex": "#644bf1",
  "rgb": {
    "r": 100,
    "g": 75,
    "b": 241
  },
  "hsl": {
    "h": 249.036,
    "s": 85.567,
    "l": 61.961
  },
  "oklch": {
    "l": 0.54379,
    "c": 0.23523,
    "h": 282.1
  },
  "luminance": 0.14092
}

Semantic roles & 50–950 ramp

primary
#644BF1
secondary
#E1EBAD
accent
#E203C1
background
#FAF7FF
surface
#F4EEFF
border
#CEC9D7
text
#100A17
muted
#7F7C85

Preview Lab

Preview with #644BF1

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

Preview Lab → · Contrast checker → · Palette generator →

#644BF1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva