#646DBE#646DBE

#646DBE is a mid, vivid blue. Relative luminance 0.174; OKLCH L 56.5% C 0.125 H 276.8°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#646DBE
RGB	rgb(100, 109, 190)
HSL	hsl(234, 41%, 57%)
HSV	hsv(234, 47%, 75%)
CMYK	cmyk(47.4%, 42.6%, 0%, 25.5%)
CIE-LAB	lab(48.71, 18.53, -43.75)
CIE-LCH	lch(48.71, 47.51, 292.96°)
OKLab	oklab(56.49% 0.0149 -0.1238)
OKLCH	oklch(56.49% 0.125 276.8)
XYZ	xyz(20.0156, 17.3632, 51.0020)
Luminance	0.1736 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DBE #BEB564

analogous

#649ABE #646DBE #8864BE

triadic

#646DBE #BE646D #6DBE64

tetradic

#646DBE #BE649A #BEB564 #64BE88

square

#646DBE #BE649A #BEB564 #64BE88

split-complementary

#646DBE #BE8864 #9ABE64

monochromatic

#323876 #444DA1 #646DBE #8F96D0 #BABEE2

Accessibility & contrast

On white

4.70

#646DBE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#646DBE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646DBE

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DBE	#FFFFFF	#000000	##FFFFFF
##646DBE	1.00	4.70	4.47	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D77C1

Deuteranopia (green-blind)

#4670BC

Tritanopia (blue-blind)

#437E8C

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646dbe;
/* rgb */ color: rgb(100, 109, 190);
/* oklch */ color: oklch(56.5% 0.125 276.8);

Tailwind

colors: {
  custom: {
    50: '#9596d2',
    500: '#646dbe',
    950: '#000000',
  },
}

SCSS

$custom: #646dbe;
$custom-light: #9596d2;
$custom-dark: #000000;

JSON

{
  "hex": "#646dbe",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 190
  },
  "hsl": {
    "h": 234,
    "s": 40.909,
    "l": 56.863
  },
  "oklch": {
    "l": 0.5649,
    "c": 0.12473,
    "h": 276.8
  },
  "luminance": 0.17364
}

Semantic roles & 50–950 ramp

primary

#646DBE

secondary

#D1CEAD

accent

#C557D1

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0E0D14

muted

#7E7E82

Preview Lab

Preview with #646DBE

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

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