#648FD3#648FD3

#648FD3 is a light, moderate blue. Relative luminance 0.271; OKLCH L 64.8% C 0.113 H 259.3°. Best body text is #000000 at 6.41:1 contrast (WCAG AA passes).

Color values

HEX	#648FD3
RGB	rgb(100, 143, 211)
HSL	hsl(217, 56%, 61%)
HSV	hsv(217, 53%, 83%)
CMYK	cmyk(52.6%, 32.2%, 0%, 17.3%)
CIE-LAB	lab(59.03, 4.61, -39.41)
CIE-LCH	lch(59.03, 39.68, 276.68°)
OKLab	oklab(64.8% -0.021 -0.111)
OKLCH	oklch(64.8% 0.113 259.3)
XYZ	xyz(26.8319, 27.0554, 65.4237)
Luminance	0.2706 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#648FD3 #D3A864

analogous

#64C6D3 #648FD3 #7064D3

triadic

#648FD3 #D3648F #8FD364

tetradic

#648FD3 #D364C6 #D3A864 #64D370

square

#648FD3 #D364C6 #D3A864 #64D370

split-complementary

#648FD3 #D37064 #C6D364

monochromatic

#2A5293 #376DC3 #648FD3 #94B1E1 #C3D4EE

Accessibility & contrast

On white

3.28

#648FD3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.41

#648FD3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #648FD3

6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##648FD3	#FFFFFF	#000000	##000000
##648FD3	1.00	3.28	6.41	6.41
#FFFFFF	3.28	1.00	21.00	21.00
#000000	6.41	21.00	1.00	1.00
##000000	6.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7494D6

Deuteranopia (green-blind)

#6789D2

Tritanopia (blue-blind)

#299EA7

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #648fd3;
/* rgb */ color: rgb(100, 143, 211);
/* oklch */ color: oklch(64.8% 0.113 259.3);

Tailwind

colors: {
  custom: {
    50: '#97afe1',
    500: '#648fd3',
    950: '#000000',
  },
}

SCSS

$custom: #648fd3;
$custom-light: #97afe1;
$custom-dark: #000000;

JSON

{
  "hex": "#648fd3",
  "rgb": {
    "r": 100,
    "g": 143,
    "b": 211
  },
  "hsl": {
    "h": 216.757,
    "s": 55.779,
    "l": 60.98
  },
  "oklch": {
    "l": 0.64796,
    "c": 0.11296,
    "h": 259.3
  },
  "luminance": 0.27057
}

Semantic roles & 50–950 ramp

primary

#648FD3

secondary

#DECEB4

accent

#8522C3

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #648FD3

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

Preview Lab → · Contrast checker → · Palette generator →