#648CCB#648CCB

#648CCB is a light, moderate blue. Relative luminance 0.258; OKLCH L 63.7% C 0.105 H 259.2°. Best body text is #000000 at 6.16:1 contrast (WCAG AA passes).

Color values

HEX	#648CCB
RGB	rgb(100, 140, 203)
HSL	hsl(217, 50%, 59%)
HSV	hsv(217, 51%, 80%)
CMYK	cmyk(50.7%, 31%, 0%, 20.4%)
CIE-LAB	lab(57.82, 3.89, -36.80)
CIE-LCH	lch(57.82, 37.01, 276.04°)
OKLab	oklab(63.74% -0.0197 -0.1034)
OKLCH	oklch(63.74% 0.105 259.2)
XYZ	xyz(25.4095, 25.7755, 60.1245)
Luminance	0.2578 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#648CCB #CBA364

analogous

#64C0CB #648CCB #7064CB

triadic

#648CCB #CB648C #8CCB64

tetradic

#648CCB #CB64C0 #CBA364 #64CB70

square

#648CCB #CB64C0 #CBA364 #64CB70

split-complementary

#648CCB #CB7064 #C0CB64

monochromatic

#2D5087 #3D6BB5 #648CCB #92AEDA #C0D0EA

Accessibility & contrast

On white

3.41

#648CCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.16

#648CCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #648CCB

6.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##648CCB	#FFFFFF	#000000	##000000
##648CCB	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)

#7490CE

Deuteranopia (green-blind)

#6787CA

Tritanopia (blue-blind)

#339AA2

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #648ccb;
/* rgb */ color: rgb(100, 140, 203);
/* oklch */ color: oklch(63.7% 0.105 259.2);

Tailwind

colors: {
  custom: {
    50: '#96addb',
    500: '#648ccb',
    950: '#000000',
  },
}

SCSS

$custom: #648ccb;
$custom-light: #96addb;
$custom-dark: #000000;

JSON

{
  "hex": "#648ccb",
  "rgb": {
    "r": 100,
    "g": 140,
    "b": 203
  },
  "hsl": {
    "h": 216.699,
    "s": 49.758,
    "l": 59.412
  },
  "oklch": {
    "l": 0.63737,
    "c": 0.10528,
    "h": 259.2
  },
  "luminance": 0.25777
}

Semantic roles & 50–950 ramp

primary

#648CCB

secondary

#D9CAB1

accent

#A34FD9

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #648CCB

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

Preview Lab → · Contrast checker → · Palette generator →