#646BCE#646BCE

#646BCE is a mid, vivid blue. Relative luminance 0.177; OKLCH L 57.1% C 0.150 H 277.5°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#646BCE
RGB	rgb(100, 107, 206)
HSL	hsl(236, 52%, 60%)
HSV	hsv(236, 51%, 81%)
CMYK	cmyk(51.5%, 48.1%, 0%, 19.2%)
CIE-LAB	lab(49.11, 24.73, -52.31)
CIE-LCH	lch(49.11, 57.86, 295.31°)
OKLab	oklab(57.08% 0.0195 -0.149)
OKLCH	oklch(57.08% 0.15 277.5)
XYZ	xyz(21.6503, 17.6796, 60.6522)
Luminance	0.1768 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BCE #CEC764

analogous

#64A0CE #646BCE #9264CE

triadic

#646BCE #CE646B #6BCE64

tetradic

#646BCE #CE64A0 #CEC764 #64CE92

square

#646BCE #CE64A0 #CEC764 #64CE92

split-complementary

#646BCE #CE9264 #A0CE64

monochromatic

#2C328C #3B43BA #646BCE #9297DD #C1C4EB

Accessibility & contrast

On white

4.63

#646BCE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#646BCE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646BCE

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BCE	#FFFFFF	#000000	##FFFFFF
##646BCE	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E79D2

Deuteranopia (green-blind)

#3371CC

Tritanopia (blue-blind)

#378193

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #646bce;
/* rgb */ color: rgb(100, 107, 206);
/* oklch */ color: oklch(57.1% 0.150 277.5);

Tailwind

colors: {
  custom: {
    50: '#9795dd',
    500: '#646bce',
    950: '#000000',
  },
}

SCSS

$custom: #646bce;
$custom-light: #9795dd;
$custom-dark: #000000;

JSON

{
  "hex": "#646bce",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 206
  },
  "hsl": {
    "h": 236.038,
    "s": 51.961,
    "l": 60
  },
  "oklch": {
    "l": 0.57082,
    "c": 0.15023,
    "h": 277.5
  },
  "luminance": 0.17681
}

Semantic roles & 50–950 ramp

primary

#646BCE

secondary

#DBD9B2

accent

#D24CDB

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646BCE

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

Preview Lab → · Contrast checker → · Palette generator →