#63648B#63648B

#63648B is a mid, moderate blue. Relative luminance 0.136; OKLCH L 51.8% C 0.061 H 282.9°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#63648B
RGB	rgb(99, 100, 139)
HSL	hsl(239, 17%, 47%)
HSV	hsv(239, 29%, 55%)
CMYK	cmyk(28.8%, 28.1%, 0%, 45.5%)
CIE-LAB	lab(43.70, 8.99, -21.62)
CIE-LCH	lch(43.70, 23.41, 292.58°)
OKLab	oklab(51.8% 0.0137 -0.0598)
OKLCH	oklch(51.8% 0.061 282.9)
XYZ	xyz(14.3617, 13.6307, 26.2954)
Luminance	0.1363 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63648B #8B8A63

analogous

#63788B #63648B #76638B

triadic

#63648B #8B6364 #648B63

tetradic

#63648B #8B6378 #8B8A63 #638B76

square

#63648B #8B6378 #8B8A63 #638B76

split-complementary

#63648B #8B7663 #788B63

monochromatic

#303144 #4A4A67 #63648B #8485A7 #A8A8C1

Accessibility & contrast

On white

5.64

#63648B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#63648B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #63648B

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63648B	#FFFFFF	#000000	##FFFFFF
##63648B	1.00	5.64	3.73	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59698D

Deuteranopia (green-blind)

#58668A

Tritanopia (blue-blind)

#596B72

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #63648b;
/* rgb */ color: rgb(99, 100, 139);
/* oklch */ color: oklch(51.8% 0.061 282.9);

Tailwind

colors: {
  custom: {
    50: '#9090ad',
    500: '#63648b',
    950: '#000000',
  },
}

SCSS

$custom: #63648b;
$custom-light: #9090ad;
$custom-dark: #000000;

JSON

{
  "hex": "#63648b",
  "rgb": {
    "r": 99,
    "g": 100,
    "b": 139
  },
  "hsl": {
    "h": 238.5,
    "s": 16.807,
    "l": 46.667
  },
  "oklch": {
    "l": 0.51801,
    "c": 0.06133,
    "h": 282.9
  },
  "luminance": 0.13631
}

Semantic roles & 50–950 ramp

primary

#63648B

secondary

#B0AF9A

accent

#B86EBA

background

#F8F8FA

surface

#F0F0F4

border

#CBCBCE

text

#0C0C10

muted

#7D7D7F

Preview Lab

Preview with #63648B

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

Preview Lab → · Contrast checker → · Palette generator →