#647EB2#647EB2

#647EB2 is a mid, moderate blue. Relative luminance 0.208; OKLCH L 59.4% C 0.086 H 263.6°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#647EB2
RGB	rgb(100, 126, 178)
HSL	hsl(220, 34%, 55%)
HSV	hsv(220, 44%, 70%)
CMYK	cmyk(43.8%, 29.2%, 0%, 30.2%)
CIE-LAB	lab(52.78, 4.61, -30.44)
CIE-LCH	lch(52.78, 30.78, 278.61°)
OKLab	oklab(59.43% -0.0095 -0.0851)
OKLCH	oklch(59.43% 0.086 263.6)
XYZ	xyz(20.7497, 20.8442, 45.0408)
Luminance	0.2084 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647EB2 #B29864

analogous

#64A5B2 #647EB2 #7164B2

triadic

#647EB2 #B2647E #7EB264

tetradic

#647EB2 #B264A5 #B29864 #64B271

square

#647EB2 #B264A5 #B29864 #64B271

split-complementary

#647EB2 #B27164 #A5B264

monochromatic

#344568 #486091 #647EB2 #8DA0C6 #B6C2DB

Accessibility & contrast

On white

4.06

#647EB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#647EB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647EB2

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647EB2	#FFFFFF	#000000	##000000
##647EB2	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B82B4

Deuteranopia (green-blind)

#637BB1

Tritanopia (blue-blind)

#488990

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #647eb2;
/* rgb */ color: rgb(100, 126, 178);
/* oklch */ color: oklch(59.4% 0.086 263.6);

Tailwind

colors: {
  custom: {
    50: '#93a3c9',
    500: '#647eb2',
    950: '#000000',
  },
}

SCSS

$custom: #647eb2;
$custom-light: #93a3c9;
$custom-dark: #000000;

JSON

{
  "hex": "#647eb2",
  "rgb": {
    "r": 100,
    "g": 126,
    "b": 178
  },
  "hsl": {
    "h": 220,
    "s": 33.621,
    "l": 54.51
  },
  "oklch": {
    "l": 0.59433,
    "c": 0.08561,
    "h": 263.6
  },
  "luminance": 0.20845
}

Semantic roles & 50–950 ramp

primary

#647EB2

secondary

#C9BEA8

accent

#A65ECA

background

#F9FAFC

surface

#F2F3F8

border

#CCCDD1

text

#0D0F13

muted

#7E7F82

Preview Lab

Preview with #647EB2

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

Preview Lab → · Contrast checker → · Palette generator →