#3F528D#3F528D

#3F528D is a mid, moderate blue. Relative luminance 0.090; OKLCH L 45.2% C 0.099 H 268.7°. Best body text is #FFFFFF at 7.49:1 contrast (WCAG AA passes).

Color values

HEX	#3F528D
RGB	rgb(63, 82, 141)
HSL	hsl(225, 38%, 40%)
HSV	hsv(225, 55%, 55%)
CMYK	cmyk(55.3%, 41.8%, 0%, 44.7%)
CIE-LAB	lab(36.01, 10.86, -35.06)
CIE-LCH	lch(36.01, 36.70, 287.21°)
OKLab	oklab(45.22% -0.0022 -0.0994)
OKLCH	oklch(45.22% 0.099 268.7)
XYZ	xyz(9.8733, 9.0137, 26.4137)
Luminance	0.0901 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F528D #8D7A3F

analogous

#3F798D #3F528D #533F8D

triadic

#3F528D #8D3F52 #528D3F

tetradic

#3F528D #8D3F79 #8D7A3F #3F8D53

square

#3F528D #8D3F79 #8D7A3F #3F8D53

split-complementary

#3F528D #8D533F #798D3F

monochromatic

#192138 #2C3963 #3F528D #566DB3 #8091C6

Accessibility & contrast

On white

7.49

#3F528D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#3F528D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F528D

7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F528D	#FFFFFF	#000000	##FFFFFF
##3F528D	1.00	7.49	2.80	7.49
#FFFFFF	7.49	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A588F

Deuteranopia (green-blind)

#31518C

Tritanopia (blue-blind)

#175F68

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3f528d;
/* rgb */ color: rgb(63, 82, 141);
/* oklch */ color: oklch(45.2% 0.099 268.7);

Tailwind

colors: {
  custom: {
    50: '#7a82af',
    500: '#3f528d',
    950: '#000000',
  },
}

SCSS

$custom: #3f528d;
$custom-light: #7a82af;
$custom-dark: #000000;

JSON

{
  "hex": "#3f528d",
  "rgb": {
    "r": 63,
    "g": 82,
    "b": 141
  },
  "hsl": {
    "h": 225.385,
    "s": 38.235,
    "l": 40
  },
  "oklch": {
    "l": 0.45222,
    "c": 0.09946,
    "h": 268.7
  },
  "luminance": 0.09014
}

Semantic roles & 50–950 ramp

primary

#3F528D

secondary

#B1A377

accent

#B25ACE

background

#F7F7FA

surface

#EEEEF4

border

#C9C9CE

text

#0A0A10

muted

#7C7C7F

Preview Lab

Preview with #3F528D

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

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