#648BD1#648BD1

#648BD1 is a light, moderate blue. Relative luminance 0.258; OKLCH L 63.8% C 0.114 H 261.5°. Best body text is #000000 at 6.16:1 contrast (WCAG AA passes).

Color values

HEX	#648BD1
RGB	rgb(100, 139, 209)
HSL	hsl(219, 54%, 61%)
HSV	hsv(219, 52%, 82%)
CMYK	cmyk(52.2%, 33.5%, 0%, 18%)
CIE-LAB	lab(57.82, 6.34, -40.18)
CIE-LCH	lch(57.82, 40.67, 278.97°)
OKLab	oklab(63.83% -0.0169 -0.1132)
OKLCH	oklch(63.83% 0.114 261.5)
XYZ	xyz(25.9929, 25.7761, 63.9148)
Luminance	0.2578 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#648BD1 #D1AA64

analogous

#64C1D1 #648BD1 #7364D1

triadic

#648BD1 #D1648B #8BD164

tetradic

#648BD1 #D164C1 #D1AA64 #64D173

square

#648BD1 #D164C1 #D1AA64 #64D173

split-complementary

#648BD1 #D17364 #C1D164

monochromatic

#2B4F90 #3969BF #648BD1 #93AEDF #C2D2ED

Accessibility & contrast

On white

3.41

#648BD1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.16

#648BD1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #648BD1

6.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##648BD1	#FFFFFF	#000000	##000000
##648BD1	1.00	3.41	6.16	6.16
#FFFFFF	3.41	1.00	21.00	21.00
#000000	6.16	21.00	1.00	1.00
##000000	6.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7090D4

Deuteranopia (green-blind)

#6386CF

Tritanopia (blue-blind)

#2D9AA4

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #648bd1;
/* rgb */ color: rgb(100, 139, 209);
/* oklch */ color: oklch(63.8% 0.114 261.5);

Tailwind

colors: {
  custom: {
    50: '#97acdf',
    500: '#648bd1',
    950: '#000000',
  },
}

SCSS

$custom: #648bd1;
$custom-light: #97acdf;
$custom-dark: #000000;

JSON

{
  "hex": "#648bd1",
  "rgb": {
    "r": 100,
    "g": 139,
    "b": 209
  },
  "hsl": {
    "h": 218.532,
    "s": 54.229,
    "l": 60.588
  },
  "oklch": {
    "l": 0.63829,
    "c": 0.11449,
    "h": 261.5
  },
  "luminance": 0.25778
}

Semantic roles & 50–950 ramp

primary

#648BD1

secondary

#DDCEB4

accent

#8924C2

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #648BD1

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

Preview Lab → · Contrast checker → · Palette generator →