#647BCF#647BCF

#647BCF is a mid, vivid blue. Relative luminance 0.214; OKLCH L 60.3% C 0.131 H 270.5°. Best body text is #000000 at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#647BCF
RGB	rgb(100, 123, 207)
HSL	hsl(227, 53%, 60%)
HSV	hsv(227, 52%, 81%)
CMYK	cmyk(51.7%, 40.6%, 0%, 18.8%)
CIE-LAB	lab(53.36, 15.28, -46.09)
CIE-LCH	lch(53.36, 48.56, 288.34°)
OKLab	oklab(60.35% 0.0012 -0.1306)
OKLCH	oklch(60.35% 0.131 270.5)
XYZ	xyz(23.5973, 21.3787, 61.9024)
Luminance	0.2138 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647BCF #CFB864

analogous

#64B0CF #647BCF #8364CF

triadic

#647BCF #CF647B #7BCF64

tetradic

#647BCF #CF64B0 #CFB864 #64CF83

square

#647BCF #CF64B0 #CFB864 #64CF83

split-complementary

#647BCF #CF8364 #B0CF64

monochromatic

#2C418D #3A56BC #647BCF #93A3DD #C1CBEC

Accessibility & contrast

On white

3.98

#647BCF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.28

#647BCF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647BCF

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647BCF	#FFFFFF	#000000	##000000
##647BCF	1.00	3.98	5.28	5.28
#FFFFFF	3.98	1.00	21.00	21.00
#000000	5.28	21.00	1.00	1.00
##000000	5.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5984D2

Deuteranopia (green-blind)

#4D7BCD

Tritanopia (blue-blind)

#338D9B

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #647bcf;
/* rgb */ color: rgb(100, 123, 207);
/* oklch */ color: oklch(60.3% 0.131 270.5);

Tailwind

colors: {
  custom: {
    50: '#97a0de',
    500: '#647bcf',
    950: '#000000',
  },
}

SCSS

$custom: #647bcf;
$custom-light: #97a0de;
$custom-dark: #000000;

JSON

{
  "hex": "#647bcf",
  "rgb": {
    "r": 100,
    "g": 123,
    "b": 207
  },
  "hsl": {
    "h": 227.103,
    "s": 52.709,
    "l": 60.196
  },
  "oklch": {
    "l": 0.60345,
    "c": 0.13062,
    "h": 270.5
  },
  "luminance": 0.2138
}

Semantic roles & 50–950 ramp

primary

#647BCF

secondary

#DCD3B3

accent

#9F25C0

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0E15

muted

#7E7E83

Preview Lab

Preview with #647BCF

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

Preview Lab → · Contrast checker → · Palette generator →