#648DCB#648DCB

#648DCB is a light, moderate blue. Relative luminance 0.261; OKLCH L 64.0% C 0.104 H 258.4°. Best body text is #000000 at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#648DCB
RGB	rgb(100, 141, 203)
HSL	hsl(216, 50%, 59%)
HSV	hsv(216, 51%, 80%)
CMYK	cmyk(50.7%, 30.5%, 0%, 20.4%)
CIE-LAB	lab(58.10, 3.31, -36.36)
CIE-LCH	lch(58.10, 36.51, 275.20°)
OKLab	oklab(63.96% -0.0209 -0.1021)
OKLCH	oklch(63.96% 0.104 258.4)
XYZ	xyz(25.5562, 26.0690, 60.1735)
Luminance	0.2607 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#648DCB #CBA264

analogous

#64C0CB #648DCB #6F64CB

triadic

#648DCB #CB648D #8DCB64

tetradic

#648DCB #CB64C0 #CBA264 #64CB6F

square

#648DCB #CB64C0 #CBA264 #64CB6F

split-complementary

#648DCB #CB6F64 #C0CB64

monochromatic

#2D5187 #3D6DB5 #648DCB #92AFDA #C0D0EA

Accessibility & contrast

On white

3.38

#648DCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.21

#648DCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #648DCB

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##648DCB	#FFFFFF	#000000	##000000
##648DCB	1.00	3.38	6.21	6.21
#FFFFFF	3.38	1.00	21.00	21.00
#000000	6.21	21.00	1.00	1.00
##000000	6.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7591CE

Deuteranopia (green-blind)

#6987CA

Tritanopia (blue-blind)

#339BA3

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #648dcb;
/* rgb */ color: rgb(100, 141, 203);
/* oklch */ color: oklch(64.0% 0.104 258.4);

Tailwind

colors: {
  custom: {
    50: '#96aedb',
    500: '#648dcb',
    950: '#000000',
  },
}

SCSS

$custom: #648dcb;
$custom-light: #96aedb;
$custom-dark: #000000;

JSON

{
  "hex": "#648dcb",
  "rgb": {
    "r": 100,
    "g": 141,
    "b": 203
  },
  "hsl": {
    "h": 216.117,
    "s": 49.758,
    "l": 59.412
  },
  "oklch": {
    "l": 0.63955,
    "c": 0.10427,
    "h": 258.4
  },
  "luminance": 0.26071
}

Semantic roles & 50–950 ramp

primary

#648DCB

secondary

#D9C9B1

accent

#A24FD9

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #648DCB

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

Preview Lab → · Contrast checker → · Palette generator →