#646EB4#646EB4

#646EB4 is a mid, moderate blue. Relative luminance 0.172; OKLCH L 56.1% C 0.109 H 276.1°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#646EB4
RGB	rgb(100, 110, 180)
HSL	hsl(233, 35%, 55%)
HSV	hsv(233, 44%, 71%)
CMYK	cmyk(44.4%, 38.9%, 0%, 29.4%)
CIE-LAB	lab(48.46, 14.87, -38.37)
CIE-LCH	lch(48.46, 41.15, 291.19°)
OKLab	oklab(56.12% 0.0117 -0.1081)
OKLCH	oklch(56.12% 0.109 276.1)
XYZ	xyz(19.0672, 17.1555, 45.4778)
Luminance	0.1716 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EB4 #B4AA64

analogous

#6496B4 #646EB4 #8264B4

triadic

#646EB4 #B4646E #6EB464

tetradic

#646EB4 #B46496 #B4AA64 #64B482

square

#646EB4 #B46496 #B4AA64 #64B482

split-complementary

#646EB4 #B48264 #96B464

monochromatic

#333A6A #475193 #646EB4 #8D95C8 #B6BBDC

Accessibility & contrast

On white

4.74

#646EB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#646EB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646EB4

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EB4	#FFFFFF	#000000	##FFFFFF
##646EB4	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5576B7

Deuteranopia (green-blind)

#4E70B2

Tritanopia (blue-blind)

#497C88

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #646eb4;
/* rgb */ color: rgb(100, 110, 180);
/* oklch */ color: oklch(56.1% 0.109 276.1);

Tailwind

colors: {
  custom: {
    50: '#9497cb',
    500: '#646eb4',
    950: '#000000',
  },
}

SCSS

$custom: #646eb4;
$custom-light: #9497cb;
$custom-dark: #000000;

JSON

{
  "hex": "#646eb4",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 180
  },
  "hsl": {
    "h": 232.5,
    "s": 34.783,
    "l": 54.902
  },
  "oklch": {
    "l": 0.5612,
    "c": 0.10876,
    "h": 276.1
  },
  "luminance": 0.17156
}

Semantic roles & 50–950 ramp

primary

#646EB4

secondary

#CBC7A9

accent

#BD5DCB

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #646EB4

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

Preview Lab → · Contrast checker → · Palette generator →