#648BCC#648BCC

#648BCC is a light, moderate blue. Relative luminance 0.255; OKLCH L 63.6% C 0.108 H 260.2°. Best body text is #000000 at 6.11:1 contrast (WCAG AA passes).

Color values

HEX	#648BCC
RGB	rgb(100, 139, 204)
HSL	hsl(218, 50%, 60%)
HSV	hsv(218, 51%, 80%)
CMYK	cmyk(51%, 31.9%, 0%, 20%)
CIE-LAB	lab(57.59, 4.79, -37.73)
CIE-LCH	lch(57.59, 38.03, 277.23°)
OKLab	oklab(63.57% -0.0183 -0.1061)
OKLCH	oklch(63.57% 0.108 260.2)
XYZ	xyz(25.3836, 25.5324, 60.7057)
Luminance	0.2553 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#648BCC #CCA564

analogous

#64BFCC #648BCC #7164CC

triadic

#648BCC #CC648B #8BCC64

tetradic

#648BCC #CC64BF #CCA564 #64CC71

square

#648BCC #CC64BF #CCA564 #64CC71

split-complementary

#648BCC #CC7164 #BFCC64

monochromatic

#2D4F89 #3C6AB7 #648BCC #92ADDB #C0D0EA

Accessibility & contrast

On white

3.44

#648BCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.11

#648BCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #648BCC

6.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##648BCC	#FFFFFF	#000000	##000000
##648BCC	1.00	3.44	6.11	6.11
#FFFFFF	3.44	1.00	21.00	21.00
#000000	6.11	21.00	1.00	1.00
##000000	6.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7290CF

Deuteranopia (green-blind)

#6586CB

Tritanopia (blue-blind)

#3299A2

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #648bcc;
/* rgb */ color: rgb(100, 139, 204);
/* oklch */ color: oklch(63.6% 0.108 260.2);

Tailwind

colors: {
  custom: {
    50: '#96acdc',
    500: '#648bcc',
    950: '#000000',
  },
}

SCSS

$custom: #648bcc;
$custom-light: #96acdc;
$custom-dark: #000000;

JSON

{
  "hex": "#648bcc",
  "rgb": {
    "r": 100,
    "g": 139,
    "b": 204
  },
  "hsl": {
    "h": 217.5,
    "s": 50.485,
    "l": 59.608
  },
  "oklch": {
    "l": 0.63571,
    "c": 0.10768,
    "h": 260.2
  },
  "luminance": 0.25534
}

Semantic roles & 50–950 ramp

primary

#648BCC

secondary

#DACBB2

accent

#A54EDA

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #648BCC

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

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