#646CEB#646CEB

#646CEB is a mid, vivid blue. Relative luminance 0.194; OKLCH L 59.2% C 0.188 H 276.3°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#646CEB
RGB	rgb(100, 108, 235)
HSL	hsl(236, 77%, 66%)
HSV	hsv(236, 57%, 92%)
CMYK	cmyk(57.4%, 54%, 0%, 7.8%)
CIE-LAB	lab(51.19, 33.34, -65.37)
CIE-LCH	lch(51.19, 73.38, 297.02°)
OKLab	oklab(59.23% 0.0206 -0.1873)
OKLCH	oklch(59.23% 0.188 276.3)
XYZ	xyz(25.6087, 19.4307, 80.9822)
Luminance	0.1943 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CEB #EBE364

analogous

#64B0EB #646CEB #9F64EB

triadic

#646CEB #EB646C #6CEB64

tetradic

#646CEB #EB64B0 #EBE364 #64EB9F

square

#646CEB #EB64B0 #EBE364 #64EB9F

split-complementary

#646CEB #EB9F64 #B0EB64

monochromatic

#1822BC #2E39E4 #646CEB #9A9FF2 #D0D3F9

Accessibility & contrast

On white

4.30

#646CEB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#646CEB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646CEB

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CEB	#FFFFFF	#000000	##000000
##646CEB	1.00	4.30	4.89	4.89
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1480EF

Deuteranopia (green-blind)

#0074E8

Tritanopia (blue-blind)

#008AA1

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #646ceb;
/* rgb */ color: rgb(100, 108, 235);
/* oklch */ color: oklch(59.2% 0.188 276.3);

Tailwind

colors: {
  custom: {
    50: '#9b96f2',
    500: '#646ceb',
    950: '#000000',
  },
}

SCSS

$custom: #646ceb;
$custom-light: #9b96f2;
$custom-dark: #000000;

JSON

{
  "hex": "#646ceb",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 235
  },
  "hsl": {
    "h": 236.444,
    "s": 77.143,
    "l": 65.686
  },
  "oklch": {
    "l": 0.59234,
    "c": 0.18848,
    "h": 276.3
  },
  "luminance": 0.19433
}

Semantic roles & 50–950 ramp

primary

#646CEB

secondary

#ECE9BF

accent

#CD0CD9

background

#FAF9FE

surface

#F4F1FD

border

#CECBD5

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #646CEB

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

Preview Lab → · Contrast checker → · Palette generator →