#648BCD#648BCD

#648BCD is a light, moderate blue. Relative luminance 0.256; OKLCH L 63.6% C 0.109 H 260.5°. Best body text is #000000 at 6.12:1 contrast (WCAG AA passes).

Color values

HEX	#648BCD
RGB	rgb(100, 139, 205)
HSL	hsl(218, 51%, 60%)
HSV	hsv(218, 51%, 80%)
CMYK	cmyk(51.2%, 32.2%, 0%, 19.6%)
CIE-LAB	lab(57.64, 5.10, -38.22)
CIE-LCH	lch(57.64, 38.56, 277.60°)
OKLab	oklab(63.62% -0.018 -0.1075)
OKLCH	oklch(63.62% 0.109 260.5)
XYZ	xyz(25.5039, 25.5805, 61.3394)
Luminance	0.2558 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#648BCD #CDA664

analogous

#64C0CD #648BCD #7164CD

triadic

#648BCD #CD648B #8BCD64

tetradic

#648BCD #CD64C0 #CDA664 #64CD71

square

#648BCD #CD64C0 #CDA664 #64CD71

split-complementary

#648BCD #CD7164 #C0CD64

monochromatic

#2D4F8A #3B6AB8 #648BCD #92AEDC #C1D0EB

Accessibility & contrast

On white

3.43

#648BCD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.12

#648BCD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #648BCD

6.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##648BCD	#FFFFFF	#000000	##000000
##648BCD	1.00	3.43	6.12	6.12
#FFFFFF	3.43	1.00	21.00	21.00
#000000	6.12	21.00	1.00	1.00
##000000	6.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7190D0

Deuteranopia (green-blind)

#6586CC

Tritanopia (blue-blind)

#3199A3

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #648bcd;
/* rgb */ color: rgb(100, 139, 205);
/* oklch */ color: oklch(63.6% 0.109 260.5);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#648bcd",
  "rgb": {
    "r": 100,
    "g": 139,
    "b": 205
  },
  "hsl": {
    "h": 217.714,
    "s": 51.22,
    "l": 59.804
  },
  "oklch": {
    "l": 0.63622,
    "c": 0.10903,
    "h": 260.5
  },
  "luminance": 0.25582
}

Semantic roles & 50–950 ramp

primary

#648BCD

secondary

#DBCCB2

accent

#A64DDB

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #648BCD

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

Preview Lab → · Contrast checker → · Palette generator →