#646EBF#646EBF

#646EBF is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.8% C 0.125 H 276.3°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#646EBF
RGB	rgb(100, 110, 191)
HSL	hsl(233, 42%, 57%)
HSV	hsv(233, 48%, 75%)
CMYK	cmyk(47.6%, 42.4%, 0%, 25.1%)
CIE-LAB	lab(49.03, 18.22, -43.82)
CIE-LCH	lch(49.03, 47.46, 292.58°)
OKLab	oklab(56.75% 0.0138 -0.124)
OKLCH	oklch(56.75% 0.125 276.3)
XYZ	xyz(20.2325, 17.6217, 51.6153)
Luminance	0.1762 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EBF #BFB564

analogous

#649BBF #646EBF #8864BF

triadic

#646EBF #BF646E #6EBF64

tetradic

#646EBF #BF649B #BFB564 #64BF88

square

#646EBF #BF649B #BFB564 #64BF88

split-complementary

#646EBF #BF8864 #9BBF64

monochromatic

#313977 #434EA3 #646EBF #8F97D1 #BBBFE3

Accessibility & contrast

On white

4.64

#646EBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#646EBF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646EBF

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EBF	#FFFFFF	#000000	##FFFFFF
##646EBF	1.00	4.64	4.52	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E78C2

Deuteranopia (green-blind)

#4771BD

Tritanopia (blue-blind)

#427F8D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646ebf;
/* rgb */ color: rgb(100, 110, 191);
/* oklch */ color: oklch(56.8% 0.125 276.3);

Tailwind

colors: {
  custom: {
    50: '#9597d3',
    500: '#646ebf',
    950: '#000000',
  },
}

SCSS

$custom: #646ebf;
$custom-light: #9597d3;
$custom-dark: #000000;

JSON

{
  "hex": "#646ebf",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 191
  },
  "hsl": {
    "h": 233.407,
    "s": 41.553,
    "l": 57.059
  },
  "oklch": {
    "l": 0.56751,
    "c": 0.1248,
    "h": 276.3
  },
  "luminance": 0.17623
}

Semantic roles & 50–950 ramp

primary

#646EBF

secondary

#D2CEAD

accent

#C456D1

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646EBF

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

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