#646BDA#646BDA

#646BDA is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.9% C 0.167 H 277.1°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#646BDA
RGB	rgb(100, 107, 218)
HSL	hsl(236, 61%, 62%)
HSV	hsv(236, 54%, 85%)
CMYK	cmyk(54.1%, 50.9%, 0%, 14.5%)
CIE-LAB	lab(49.84, 28.52, -57.96)
CIE-LCH	lch(49.84, 64.60, 296.20°)
OKLab	oklab(57.87% 0.0207 -0.1656)
OKLCH	oklch(57.87% 0.167 277.1)
XYZ	xyz(23.1641, 18.2851, 68.6248)
Luminance	0.1829 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BDA #DAD364

analogous

#64A6DA #646BDA #9864DA

triadic

#646BDA #DA646B #6BDA64

tetradic

#646BDA #DA64A6 #DAD364 #64DA98

square

#646BDA #DA64A6 #DAD364 #64DA98

split-complementary

#646BDA #DA9864 #A6DA64

monochromatic

#262D9E #333CCE #646BDA #959AE6 #C7C9F2

Accessibility & contrast

On white

4.51

#646BDA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#646BDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646BDA

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BDA	#FFFFFF	#000000	##000000
##646BDA	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#317BDE

Deuteranopia (green-blind)

#1F72D8

Tritanopia (blue-blind)

#2A8498

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #646bda;
/* rgb */ color: rgb(100, 107, 218);
/* oklch */ color: oklch(57.9% 0.167 277.1);

Tailwind

colors: {
  custom: {
    50: '#9995e6',
    500: '#646bda',
    950: '#000000',
  },
}

SCSS

$custom: #646bda;
$custom-light: #9995e6;
$custom-dark: #000000;

JSON

{
  "hex": "#646bda",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 218
  },
  "hsl": {
    "h": 236.441,
    "s": 61.458,
    "l": 62.353
  },
  "oklch": {
    "l": 0.57873,
    "c": 0.16685,
    "h": 277.1
  },
  "luminance": 0.18287
}

Semantic roles & 50–950 ramp

primary

#646BDA

secondary

#E2E0B7

accent

#BF1CC9

background

#F9F9FE

surface

#F2F1FC

border

#CCCBD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #646BDA

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

Preview Lab → · Contrast checker → · Palette generator →