#647CCF#647CCF

#647CCF is a mid, vivid blue. Relative luminance 0.216; OKLCH L 60.6% C 0.129 H 270.0°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#647CCF
RGB	rgb(100, 124, 207)
HSL	hsl(227, 53%, 60%)
HSV	hsv(227, 52%, 81%)
CMYK	cmyk(51.7%, 40.1%, 0%, 18.8%)
CIE-LAB	lab(53.63, 14.68, -45.67)
CIE-LCH	lch(53.63, 47.97, 287.81°)
OKLab	oklab(60.55% 0.0001 -0.1293)
OKLCH	oklch(60.55% 0.129 270)
XYZ	xyz(23.7220, 21.6280, 61.9440)
Luminance	0.2163 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647CCF #CFB764

analogous

#64B1CF #647CCF #8164CF

triadic

#647CCF #CF647C #7CCF64

tetradic

#647CCF #CF64B1 #CFB764 #64CF81

square

#647CCF #CF64B1 #CFB764 #64CF81

split-complementary

#647CCF #CF8164 #B1CF64

monochromatic

#2C418D #3A57BC #647CCF #93A3DD #C1CBEC

Accessibility & contrast

On white

3.94

#647CCF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#647CCF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647CCF

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647CCF	#FFFFFF	#000000	##000000
##647CCF	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B85D2

Deuteranopia (green-blind)

#4F7CCD

Tritanopia (blue-blind)

#338E9B

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #647ccf;
/* rgb */ color: rgb(100, 124, 207);
/* oklch */ color: oklch(60.6% 0.129 270.0);

Tailwind

colors: {
  custom: {
    50: '#97a1de',
    500: '#647ccf',
    950: '#000000',
  },
}

SCSS

$custom: #647ccf;
$custom-light: #97a1de;
$custom-dark: #000000;

JSON

{
  "hex": "#647ccf",
  "rgb": {
    "r": 100,
    "g": 124,
    "b": 207
  },
  "hsl": {
    "h": 226.542,
    "s": 52.709,
    "l": 60.196
  },
  "oklch": {
    "l": 0.60552,
    "c": 0.12935,
    "h": 270
  },
  "luminance": 0.2163
}

Semantic roles & 50–950 ramp

primary

#647CCF

secondary

#DCD3B3

accent

#9D25C0

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0E15

muted

#7E7E83

Preview Lab

Preview with #647CCF

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

Preview Lab → · Contrast checker → · Palette generator →