#6366A5#6366A5

#6366A5 is a mid, moderate blue. Relative luminance 0.149; OKLCH L 53.6% C 0.098 H 280.5°. Best body text is #FFFFFF at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#6366A5
RGB	rgb(99, 102, 165)
HSL	hsl(237, 27%, 52%)
HSV	hsv(237, 40%, 65%)
CMYK	cmyk(40%, 38.2%, 0%, 35.3%)
CIE-LAB	lab(45.46, 15.07, -34.33)
CIE-LCH	lch(45.46, 37.49, 293.70°)
OKLab	oklab(53.55% 0.0178 -0.0964)
OKLCH	oklch(53.55% 0.098 280.5)
XYZ	xyz(16.6865, 14.8713, 37.5813)
Luminance	0.1487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6366A5 #A5A263

analogous

#6387A5 #6366A5 #8163A5

triadic

#6366A5 #A56366 #66A563

tetradic

#6366A5 #A56387 #A5A263 #63A581

square

#6366A5 #A56387 #A5A263 #63A581

split-complementary

#6366A5 #A58163 #87A563

monochromatic

#34365A #4A4D81 #6366A5 #8A8CBB #B1B2D2

Accessibility & contrast

On white

5.28

#6366A5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.97

#6366A5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6366A5

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6366A5	#FFFFFF	#000000	##FFFFFF
##6366A5	1.00	5.28	3.97	5.28
#FFFFFF	5.28	1.00	21.00	1.00
#000000	3.97	21.00	1.00	21.00
##FFFFFF	5.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#516EA7

Deuteranopia (green-blind)

#4D69A4

Tritanopia (blue-blind)

#4F727D

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #6366a5;
/* rgb */ color: rgb(99, 102, 165);
/* oklch */ color: oklch(53.6% 0.098 280.5);

Tailwind

colors: {
  custom: {
    50: '#9291c0',
    500: '#6366a5',
    950: '#000000',
  },
}

SCSS

$custom: #6366a5;
$custom-light: #9291c0;
$custom-dark: #000000;

JSON

{
  "hex": "#6366a5",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 165
  },
  "hsl": {
    "h": 237.273,
    "s": 26.829,
    "l": 51.765
  },
  "oklch": {
    "l": 0.53553,
    "c": 0.09805,
    "h": 280.5
  },
  "luminance": 0.14872
}

Semantic roles & 50–950 ramp

primary

#6366A5

secondary

#C0BFA3

accent

#BF65C3

background

#F9F8FB

surface

#F1F0F7

border

#CBCBD0

text

#0D0C12

muted

#7E7D81

Preview Lab

Preview with #6366A5

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

Preview Lab → · Contrast checker → · Palette generator →