#646DBF#646DBF

#646DBF is a mid, vivid blue. Relative luminance 0.174; OKLCH L 56.5% C 0.126 H 276.8°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#646DBF
RGB	rgb(100, 109, 191)
HSL	hsl(234, 42%, 57%)
HSV	hsv(234, 48%, 75%)
CMYK	cmyk(47.6%, 42.9%, 0%, 25.1%)
CIE-LAB	lab(48.77, 18.84, -44.24)
CIE-LCH	lch(48.77, 48.08, 293.07°)
OKLab	oklab(56.55% 0.015 -0.1253)
OKLCH	oklch(56.55% 0.126 276.8)
XYZ	xyz(20.1252, 17.4071, 51.5796)
Luminance	0.1741 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DBF #BFB664

analogous

#649BBF #646DBF #8964BF

triadic

#646DBF #BF646D #6DBF64

tetradic

#646DBF #BF649B #BFB664 #64BF89

square

#646DBF #BF649B #BFB664 #64BF89

split-complementary

#646DBF #BF8964 #9BBF64

monochromatic

#313877 #434DA3 #646DBF #8F96D1 #BBBFE3

Accessibility & contrast

On white

4.69

#646DBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#646DBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646DBF

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DBF	#FFFFFF	#000000	##FFFFFF
##646DBF	1.00	4.69	4.48	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D78C2

Deuteranopia (green-blind)

#4570BD

Tritanopia (blue-blind)

#427E8D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646dbf;
/* rgb */ color: rgb(100, 109, 191);
/* oklch */ color: oklch(56.5% 0.126 276.8);

Tailwind

colors: {
  custom: {
    50: '#9596d3',
    500: '#646dbf',
    950: '#000000',
  },
}

SCSS

$custom: #646dbf;
$custom-light: #9596d3;
$custom-dark: #000000;

JSON

{
  "hex": "#646dbf",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 191
  },
  "hsl": {
    "h": 234.066,
    "s": 41.553,
    "l": 57.059
  },
  "oklch": {
    "l": 0.56549,
    "c": 0.12617,
    "h": 276.8
  },
  "luminance": 0.17408
}

Semantic roles & 50–950 ramp

primary

#646DBF

secondary

#D2CEAD

accent

#C556D1

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646DBF

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

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