#647FDB#647FDB

#647FDB is a mid, vivid blue. Relative luminance 0.230; OKLCH L 61.9% C 0.142 H 269.6°. Best body text is #000000 at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#647FDB
RGB	rgb(100, 127, 219)
HSL	hsl(226, 62%, 63%)
HSV	hsv(226, 54%, 86%)
CMYK	cmyk(54.3%, 42%, 0%, 14.1%)
CIE-LAB	lab(55.07, 16.67, -50.15)
CIE-LCH	lch(55.07, 52.85, 288.38°)
OKLab	oklab(61.87% -0.0011 -0.1424)
OKLCH	oklch(61.87% 0.142 269.6)
XYZ	xyz(25.6269, 23.0007, 70.0932)
Luminance	0.2300 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647FDB #DBC064

analogous

#64BADB #647FDB #8564DB

triadic

#647FDB #DB647F #7FDB64

tetradic

#647FDB #DB64BA #DBC064 #64DB85

square

#647FDB #DB64BA #DBC064 #64DB85

split-complementary

#647FDB #DB8564 #BADB64

monochromatic

#2541A0 #3256CF #647FDB #96A8E7 #C7D1F2

Accessibility & contrast

On white

3.75

#647FDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.60

#647FDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647FDB

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647FDB	#FFFFFF	#000000	##000000
##647FDB	1.00	3.75	5.60	5.60
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.60	21.00	1.00	1.00
##000000	5.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5889DF

Deuteranopia (green-blind)

#4A7FD9

Tritanopia (blue-blind)

#2393A2

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #647fdb;
/* rgb */ color: rgb(100, 127, 219);
/* oklch */ color: oklch(61.9% 0.142 269.6);

Tailwind

colors: {
  custom: {
    50: '#98a3e6',
    500: '#647fdb',
    950: '#000000',
  },
}

SCSS

$custom: #647fdb;
$custom-light: #98a3e6;
$custom-dark: #000000;

JSON

{
  "hex": "#647fdb",
  "rgb": {
    "r": 100,
    "g": 127,
    "b": 219
  },
  "hsl": {
    "h": 226.387,
    "s": 62.304,
    "l": 62.549
  },
  "oklch": {
    "l": 0.61869,
    "c": 0.14245,
    "h": 269.6
  },
  "luminance": 0.23003
}

Semantic roles & 50–950 ramp

primary

#647FDB

secondary

#E3D9B8

accent

#A21BCA

background

#F9FAFE

surface

#F2F3FC

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #647FDB

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

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