#647FDF#647FDF

#647FDF is a light, vivid blue. Relative luminance 0.232; OKLCH L 62.1% C 0.148 H 269.9°. Best body text is #000000 at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#647FDF
RGB	rgb(100, 127, 223)
HSL	hsl(227, 66%, 63%)
HSV	hsv(227, 55%, 87%)
CMYK	cmyk(55.2%, 43%, 0%, 12.5%)
CIE-LAB	lab(55.29, 17.95, -52.05)
CIE-LCH	lch(55.29, 55.05, 289.02°)
OKLab	oklab(62.11% -0.0004 -0.148)
OKLCH	oklch(62.11% 0.148 269.9)
XYZ	xyz(26.1598, 23.2139, 72.8999)
Luminance	0.2322 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647FDF #DFC464

analogous

#64BCDF #647FDF #8664DF

triadic

#647FDF #DF647F #7FDF64

tetradic

#647FDF #DF64BC #DFC464 #64DF86

square

#647FDF #DF64BC #DFC464 #64DF86

split-complementary

#647FDF #DF8664 #BCDF64

monochromatic

#223FA6 #3155D5 #647FDF #97A9E9 #C9D3F4

Accessibility & contrast

On white

3.72

#647FDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.64

#647FDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647FDF

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647FDF	#FFFFFF	#000000	##000000
##647FDF	1.00	3.72	5.64	5.64
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.64	21.00	1.00	1.00
##000000	5.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#558AE3

Deuteranopia (green-blind)

#467FDD

Tritanopia (blue-blind)

#1C94A4

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #647fdf;
/* rgb */ color: rgb(100, 127, 223);
/* oklch */ color: oklch(62.1% 0.148 269.9);

Tailwind

colors: {
  custom: {
    50: '#99a3e9',
    500: '#647fdf',
    950: '#000000',
  },
}

SCSS

$custom: #647fdf;
$custom-light: #99a3e9;
$custom-dark: #000000;

JSON

{
  "hex": "#647fdf",
  "rgb": {
    "r": 100,
    "g": 127,
    "b": 223
  },
  "hsl": {
    "h": 226.829,
    "s": 65.775,
    "l": 63.333
  },
  "oklch": {
    "l": 0.62107,
    "c": 0.14801,
    "h": 269.9
  },
  "luminance": 0.23216
}

Semantic roles & 50–950 ramp

primary

#647FDF

secondary

#E5DCB9

accent

#A618CE

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #647FDF

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

Preview Lab → · Contrast checker → · Palette generator →