#646EB8#646EB8

#646EB8 is a mid, moderate blue. Relative luminance 0.173; OKLCH L 56.3% C 0.115 H 276.3°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#646EB8
RGB	rgb(100, 110, 184)
HSL	hsl(233, 37%, 56%)
HSV	hsv(233, 46%, 72%)
CMYK	cmyk(45.7%, 40.2%, 0%, 27.8%)
CIE-LAB	lab(48.66, 16.08, -40.36)
CIE-LCH	lch(48.66, 43.45, 291.72°)
OKLab	oklab(56.35% 0.0125 -0.1139)
OKLCH	oklch(56.35% 0.115 276.3)
XYZ	xyz(19.4805, 17.3209, 47.6549)
Luminance	0.1732 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EB8 #B8AE64

analogous

#6498B8 #646EB8 #8464B8

triadic

#646EB8 #B8646E #6EB864

tetradic

#646EB8 #B86498 #B8AE64 #64B884

square

#646EB8 #B86498 #B8AE64 #64B884

split-complementary

#646EB8 #B88464 #98B864

monochromatic

#333A6F #465099 #646EB8 #8E95CB #B8BDDE

Accessibility & contrast

On white

4.70

#646EB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#646EB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646EB8

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EB8	#FFFFFF	#000000	##FFFFFF
##646EB8	1.00	4.70	4.46	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5277BB

Deuteranopia (green-blind)

#4C70B6

Tritanopia (blue-blind)

#477D8A

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646eb8;
/* rgb */ color: rgb(100, 110, 184);
/* oklch */ color: oklch(56.3% 0.115 276.3);

Tailwind

colors: {
  custom: {
    50: '#9497cd',
    500: '#646eb8',
    950: '#000000',
  },
}

SCSS

$custom: #646eb8;
$custom-light: #9497cd;
$custom-dark: #000000;

JSON

{
  "hex": "#646eb8",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 184
  },
  "hsl": {
    "h": 232.857,
    "s": 37.168,
    "l": 55.686
  },
  "oklch": {
    "l": 0.56345,
    "c": 0.11462,
    "h": 276.3
  },
  "luminance": 0.17322
}

Semantic roles & 50–950 ramp

primary

#646EB8

secondary

#CDC9AA

accent

#C05BCD

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #646EB8

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

Preview Lab → · Contrast checker → · Palette generator →