#646EEB#646EEB

#646EEB is a mid, vivid blue. Relative luminance 0.199; OKLCH L 59.6% C 0.186 H 275.8°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#646EEB
RGB	rgb(100, 110, 235)
HSL	hsl(236, 77%, 66%)
HSV	hsv(236, 57%, 92%)
CMYK	cmyk(57.4%, 53.2%, 0%, 7.8%)
CIE-LAB	lab(51.68, 32.13, -64.58)
CIE-LCH	lch(51.68, 72.13, 296.45°)
OKLab	oklab(59.6% 0.0187 -0.185)
OKLCH	oklch(59.6% 0.186 275.8)
XYZ	xyz(25.8220, 19.8575, 81.0533)
Luminance	0.1986 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EEB #EBE164

analogous

#64B1EB #646EEB #9E64EB

triadic

#646EEB #EB646E #6EEB64

tetradic

#646EEB #EB64B1 #EBE164 #64EB9E

square

#646EEB #EB64B1 #EBE164 #64EB9E

split-complementary

#646EEB #EB9E64 #B1EB64

monochromatic

#1824BC #2E3BE4 #646EEB #9AA1F2 #D0D3F9

Accessibility & contrast

On white

4.22

#646EEB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#646EEB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646EEB

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EEB	#FFFFFF	#000000	##000000
##646EEB	1.00	4.22	4.97	4.97
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E81EF

Deuteranopia (green-blind)

#0076E8

Tritanopia (blue-blind)

#008BA2

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #646eeb;
/* rgb */ color: rgb(100, 110, 235);
/* oklch */ color: oklch(59.6% 0.186 275.8);

Tailwind

colors: {
  custom: {
    50: '#9b97f2',
    500: '#646eeb',
    950: '#000000',
  },
}

SCSS

$custom: #646eeb;
$custom-light: #9b97f2;
$custom-dark: #000000;

JSON

{
  "hex": "#646eeb",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 235
  },
  "hsl": {
    "h": 235.556,
    "s": 77.143,
    "l": 65.686
  },
  "oklch": {
    "l": 0.59599,
    "c": 0.18595,
    "h": 275.8
  },
  "luminance": 0.19859
}

Semantic roles & 50–950 ramp

primary

#646EEB

secondary

#ECE9BF

accent

#CA0CD9

background

#FAF9FE

surface

#F4F2FD

border

#CECCD5

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #646EEB

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

Preview Lab → · Contrast checker → · Palette generator →