#646FDB#646FDB

#646FDB is a mid, vivid blue. Relative luminance 0.192; OKLCH L 58.7% C 0.163 H 275.8°. Best body text is #000000 at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#646FDB
RGB	rgb(100, 111, 219)
HSL	hsl(234, 62%, 63%)
HSV	hsv(234, 54%, 86%)
CMYK	cmyk(54.3%, 49.3%, 0%, 14.1%)
CIE-LAB	lab(50.91, 26.40, -56.81)
CIE-LCH	lch(50.91, 62.64, 294.93°)
OKLab	oklab(58.7% 0.0165 -0.1621)
OKLCH	oklch(58.7% 0.163 275.8)
XYZ	xyz(23.7221, 19.1911, 69.4583)
Luminance	0.1919 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FDB #DBD064

analogous

#64AADB #646FDB #9564DB

triadic

#646FDB #DB646F #6FDB64

tetradic

#646FDB #DB64AA #DBD064 #64DB95

square

#646FDB #DB64AA #DBD064 #64DB95

split-complementary

#646FDB #DB9564 #AADB64

monochromatic

#2530A0 #3241CF #646FDB #969DE7 #C7CBF2

Accessibility & contrast

On white

4.34

#646FDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.84

#646FDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FDB

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FDB	#FFFFFF	#000000	##000000
##646FDB	1.00	4.34	4.84	4.84
#FFFFFF	4.34	1.00	21.00	21.00
#000000	4.84	21.00	1.00	1.00
##000000	4.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#397EDF

Deuteranopia (green-blind)

#2974D9

Tritanopia (blue-blind)

#28879B

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #646fdb;
/* rgb */ color: rgb(100, 111, 219);
/* oklch */ color: oklch(58.7% 0.163 275.8);

Tailwind

colors: {
  custom: {
    50: '#9998e7',
    500: '#646fdb',
    950: '#000000',
  },
}

SCSS

$custom: #646fdb;
$custom-light: #9998e7;
$custom-dark: #000000;

JSON

{
  "hex": "#646fdb",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 219
  },
  "hsl": {
    "h": 234.454,
    "s": 62.304,
    "l": 62.549
  },
  "oklch": {
    "l": 0.58699,
    "c": 0.16297,
    "h": 275.8
  },
  "luminance": 0.19193
}

Semantic roles & 50–950 ramp

primary

#646FDB

secondary

#E3DFB8

accent

#BA1BCA

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #646FDB

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

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