#646BE9#646BE9

#646BE9 is a mid, vivid blue. Relative luminance 0.191; OKLCH L 58.9% C 0.187 H 276.6°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#646BE9
RGB	rgb(100, 107, 233)
HSL	hsl(237, 75%, 65%)
HSV	hsv(237, 57%, 91%)
CMYK	cmyk(57.1%, 54.1%, 0%, 8.6%)
CIE-LAB	lab(50.81, 33.30, -64.85)
CIE-LCH	lch(50.81, 72.90, 297.18°)
OKLab	oklab(58.91% 0.0215 -0.1858)
OKLCH	oklch(58.91% 0.187 276.6)
XYZ	xyz(25.2165, 19.1061, 79.4340)
Luminance	0.1911 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BE9 #E9E264

analogous

#64ADE9 #646BE9 #9F64E9

triadic

#646BE9 #E9646B #6BE964

tetradic

#646BE9 #E964AD #E9E264 #64E99F

square

#646BE9 #E964AD #E9E264 #64E99F

split-complementary

#646BE9 #E99F64 #ADE964

monochromatic

#1A23B8 #2E38E1 #646BE9 #9A9EF1 #CFD1F8

Accessibility & contrast

On white

4.36

#646BE9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#646BE9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646BE9

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BE9	#FFFFFF	#000000	##000000
##646BE9	1.00	4.36	4.82	4.82
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#147FED

Deuteranopia (green-blind)

#0074E6

Tritanopia (blue-blind)

#0A88A0

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #646be9;
/* rgb */ color: rgb(100, 107, 233);
/* oklch */ color: oklch(58.9% 0.187 276.6);

Tailwind

colors: {
  custom: {
    50: '#9b95f1',
    500: '#646be9',
    950: '#000000',
  },
}

SCSS

$custom: #646be9;
$custom-light: #9b95f1;
$custom-dark: #000000;

JSON

{
  "hex": "#646be9",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 233
  },
  "hsl": {
    "h": 236.842,
    "s": 75.141,
    "l": 65.294
  },
  "oklch": {
    "l": 0.58911,
    "c": 0.18709,
    "h": 276.6
  },
  "luminance": 0.19108
}

Semantic roles & 50–950 ramp

primary

#646BE9

secondary

#EBE8BE

accent

#CD0ED7

background

#FAF9FE

surface

#F4F1FD

border

#CECBD5

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #646BE9

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

Preview Lab → · Contrast checker → · Palette generator →