#3F528B#3F528B

#3F528B is a mid, moderate blue. Relative luminance 0.090; OKLCH L 45.1% C 0.096 H 268.4°. Best body text is #FFFFFF at 7.52:1 contrast (WCAG AA passes).

Color values

HEX	#3F528B
RGB	rgb(63, 82, 139)
HSL	hsl(225, 38%, 40%)
HSV	hsv(225, 55%, 55%)
CMYK	cmyk(54.7%, 41%, 0%, 45.5%)
CIE-LAB	lab(35.90, 10.17, -34.02)
CIE-LCH	lch(35.90, 35.51, 286.65°)
OKLab	oklab(45.1% -0.0026 -0.0964)
OKLCH	oklch(45.1% 0.096 268.4)
XYZ	xyz(9.7259, 8.9547, 25.6370)
Luminance	0.0896 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F528B #8B783F

analogous

#3F788B #3F528B #523F8B

triadic

#3F528B #8B3F52 #528B3F

tetradic

#3F528B #8B3F78 #8B783F #3F8B52

square

#3F528B #8B3F78 #8B783F #3F8B52

split-complementary

#3F528B #8B523F #788B3F

monochromatic

#192037 #2C3961 #3F528B #556CB2 #7F91C5

Accessibility & contrast

On white

7.52

#3F528B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#3F528B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F528B

7.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F528B	#FFFFFF	#000000	##FFFFFF
##3F528B	1.00	7.52	2.79	7.52
#FFFFFF	7.52	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B588D

Deuteranopia (green-blind)

#32518A

Tritanopia (blue-blind)

#195E68

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3f528b;
/* rgb */ color: rgb(63, 82, 139);
/* oklch */ color: oklch(45.1% 0.096 268.4);

Tailwind

colors: {
  custom: {
    50: '#7a82ad',
    500: '#3f528b',
    950: '#000000',
  },
}

SCSS

$custom: #3f528b;
$custom-light: #7a82ad;
$custom-dark: #000000;

JSON

{
  "hex": "#3f528b",
  "rgb": {
    "r": 63,
    "g": 82,
    "b": 139
  },
  "hsl": {
    "h": 225,
    "s": 37.624,
    "l": 39.608
  },
  "oklch": {
    "l": 0.45097,
    "c": 0.09644,
    "h": 268.4
  },
  "luminance": 0.08955
}

Semantic roles & 50–950 ramp

primary

#3F528B

secondary

#AFA176

accent

#B15ACE

background

#F7F7FA

surface

#EEEEF4

border

#C9C9CE

text

#090A10

muted

#7B7C7F

Preview Lab

Preview with #3F528B

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

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