#646EA1#646EA1

#646EA1 is a mid, moderate blue. Relative luminance 0.164; OKLCH L 55.1% C 0.080 H 275.0°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#646EA1
RGB	rgb(100, 110, 161)
HSL	hsl(230, 24%, 51%)
HSV	hsv(230, 38%, 63%)
CMYK	cmyk(37.9%, 31.7%, 0%, 36.9%)
CIE-LAB	lab(47.54, 9.28, -28.71)
CIE-LCH	lch(47.54, 30.18, 287.92°)
OKLab	oklab(55.11% 0.007 -0.0801)
OKLCH	oklch(55.11% 0.08 275)
XYZ	xyz(17.2626, 16.4337, 35.9738)
Luminance	0.1643 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EA1 #A19764

analogous

#648CA1 #646EA1 #7864A1

triadic

#646EA1 #A1646E #6EA164

tetradic

#646EA1 #A1648C #A19764 #64A178

square

#646EA1 #A1648C #A19764 #64A178

split-complementary

#646EA1 #A17864 #8CA164

monochromatic

#343A56 #4B537C #646EA1 #8A92B8 #B0B5CF

Accessibility & contrast

On white

4.90

#646EA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#646EA1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646EA1

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EA1	#FFFFFF	#000000	##FFFFFF
##646EA1	1.00	4.90	4.29	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D73A3

Deuteranopia (green-blind)

#596FA0

Tritanopia (blue-blind)

#527880

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #646ea1;
/* rgb */ color: rgb(100, 110, 161);
/* oklch */ color: oklch(55.1% 0.080 275.0);

Tailwind

colors: {
  custom: {
    50: '#9297bd',
    500: '#646ea1',
    950: '#000000',
  },
}

SCSS

$custom: #646ea1;
$custom-light: #9297bd;
$custom-dark: #000000;

JSON

{
  "hex": "#646ea1",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 161
  },
  "hsl": {
    "h": 230.164,
    "s": 24.498,
    "l": 51.176
  },
  "oklch": {
    "l": 0.55112,
    "c": 0.08043,
    "h": 275
  },
  "luminance": 0.16434
}

Semantic roles & 50–950 ramp

primary

#646EA1

secondary

#BEB9A3

accent

#B267C1

background

#F9F9FB

surface

#F1F2F6

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646EA1

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

Preview Lab → · Contrast checker → · Palette generator →