#3F537A#3F537A

#3F537A is a dark, moderate blue. Relative luminance 0.086; OKLCH L 44.3% C 0.069 H 263.1°. Best body text is #FFFFFF at 7.69:1 contrast (WCAG AA passes).

Color values

HEX	#3F537A
RGB	rgb(63, 83, 122)
HSL	hsl(220, 32%, 36%)
HSV	hsv(220, 48%, 48%)
CMYK	cmyk(48.4%, 32%, 0%, 52.2%)
CIE-LAB	lab(35.30, 3.84, -24.52)
CIE-LCH	lch(35.30, 24.82, 278.89°)
OKLab	oklab(44.34% -0.0084 -0.0687)
OKLCH	oklch(44.34% 0.069 263.1)
XYZ	xyz(8.6549, 8.6479, 19.6217)
Luminance	0.0865 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F537A #7A663F

analogous

#3F717A #3F537A #493F7A

triadic

#3F537A #7A3F53 #537A3F

tetradic

#3F537A #7A3F71 #7A663F #3F7A49

square

#3F537A #7A3F71 #7A663F #3F7A49

split-complementary

#3F537A #7A493F #717A3F

monochromatic

#151C29 #2A3852 #3F537A #546EA2 #798FBA

Accessibility & contrast

On white

7.69

#3F537A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#3F537A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F537A

7.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F537A	#FFFFFF	#000000	##FFFFFF
##3F537A	1.00	7.69	2.73	7.69
#FFFFFF	7.69	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#45567C

Deuteranopia (green-blind)

#3E5179

Tritanopia (blue-blind)

#285B61

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3f537a;
/* rgb */ color: rgb(63, 83, 122);
/* oklch */ color: oklch(44.3% 0.069 263.1);

Tailwind

colors: {
  custom: {
    50: '#7783a0',
    500: '#3f537a',
    950: '#000000',
  },
}

SCSS

$custom: #3f537a;
$custom-light: #7783a0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f537a",
  "rgb": {
    "r": 63,
    "g": 83,
    "b": 122
  },
  "hsl": {
    "h": 219.661,
    "s": 31.892,
    "l": 36.275
  },
  "oklch": {
    "l": 0.44339,
    "c": 0.06926,
    "h": 263.1
  },
  "luminance": 0.08648
}

Semantic roles & 50–950 ramp

primary

#3F537A

secondary

#A49370

accent

#A560C8

background

#F7F7F9

surface

#EDEEF2

border

#C8C9CC

text

#090A0E

muted

#7B7C7E

Preview Lab

Preview with #3F537A

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

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