#646DD5#646DD5

#646DD5 is a mid, vivid blue. Relative luminance 0.185; OKLCH L 57.9% C 0.157 H 276.6°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#646DD5
RGB	rgb(100, 109, 213)
HSL	hsl(235, 57%, 61%)
HSV	hsv(235, 53%, 84%)
CMYK	cmyk(53.1%, 48.8%, 0%, 16.5%)
CIE-LAB	lab(50.04, 25.72, -54.81)
CIE-LCH	lch(50.04, 60.54, 295.14°)
OKLab	oklab(57.92% 0.018 -0.1563)
OKLCH	oklch(57.92% 0.157 276.6)
XYZ	xyz(22.7306, 18.4492, 65.3012)
Luminance	0.1845 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DD5 #D5CC64

analogous

#64A6D5 #646DD5 #9464D5

triadic

#646DD5 #D5646D #6DD564

tetradic

#646DD5 #D564A6 #D5CC64 #64D594

square

#646DD5 #D564A6 #D5CC64 #64D594

split-complementary

#646DD5 #D59464 #A6D564

monochromatic

#293196 #3641C6 #646DD5 #949AE2 #C4C8EF

Accessibility & contrast

On white

4.48

#646DD5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#646DD5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646DD5

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DD5	#FFFFFF	#000000	##000000
##646DD5	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B7CD9

Deuteranopia (green-blind)

#2D73D3

Tritanopia (blue-blind)

#308497

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #646dd5;
/* rgb */ color: rgb(100, 109, 213);
/* oklch */ color: oklch(57.9% 0.157 276.6);

Tailwind

colors: {
  custom: {
    50: '#9896e2',
    500: '#646dd5',
    950: '#000000',
  },
}

SCSS

$custom: #646dd5;
$custom-light: #9896e2;
$custom-dark: #000000;

JSON

{
  "hex": "#646dd5",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 213
  },
  "hsl": {
    "h": 235.221,
    "s": 57.36,
    "l": 61.373
  },
  "oklch": {
    "l": 0.57922,
    "c": 0.15732,
    "h": 276.6
  },
  "luminance": 0.18451
}

Semantic roles & 50–950 ramp

primary

#646DD5

secondary

#E0DCB5

accent

#B821C5

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646DD5

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

Preview Lab → · Contrast checker → · Palette generator →