#3F4580#3F4580

#3F4580 is a dark, moderate blue. Relative luminance 0.069; OKLCH L 41.5% C 0.098 H 276.9°. Best body text is #FFFFFF at 8.84:1 contrast (WCAG AA passes).

Color values

HEX	#3F4580
RGB	rgb(63, 69, 128)
HSL	hsl(234, 34%, 37%)
HSV	hsv(234, 51%, 50%)
CMYK	cmyk(50.8%, 46.1%, 0%, 49.8%)
CIE-LAB	lab(31.51, 15.00, -34.22)
CIE-LCH	lch(31.51, 37.36, 293.67°)
OKLab	oklab(41.53% 0.0117 -0.0971)
OKLCH	oklch(41.53% 0.098 276.9)
XYZ	xyz(8.0731, 6.8711, 21.3187)
Luminance	0.0687 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4580 #807A3F

analogous

#3F6580 #3F4580 #5A3F80

triadic

#3F4580 #803F45 #45803F

tetradic

#3F4580 #803F65 #807A3F #3F805A

square

#3F4580 #803F65 #807A3F #3F805A

split-complementary

#3F4580 #805A3F #65803F

monochromatic

#17192E #2B2F57 #3F4580 #535BA9 #7B81BE

Accessibility & contrast

On white

8.84

#3F4580 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#3F4580 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4580

8.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4580	#FFFFFF	#000000	##FFFFFF
##3F4580	1.00	8.84	2.37	8.84
#FFFFFF	8.84	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D4D82

Deuteranopia (green-blind)

#27487F

Tritanopia (blue-blind)

#26525C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3f4580;
/* rgb */ color: rgb(63, 69, 128);
/* oklch */ color: oklch(41.5% 0.098 276.9);

Tailwind

colors: {
  custom: {
    50: '#7878a5',
    500: '#3f4580',
    950: '#000000',
  },
}

SCSS

$custom: #3f4580;
$custom-light: #7878a5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4580",
  "rgb": {
    "r": 63,
    "g": 69,
    "b": 128
  },
  "hsl": {
    "h": 234.462,
    "s": 34.031,
    "l": 37.451
  },
  "oklch": {
    "l": 0.4153,
    "c": 0.09779,
    "h": 276.9
  },
  "luminance": 0.06872
}

Semantic roles & 50–950 ramp

primary

#3F4580

secondary

#A8A372

accent

#C05ECA

background

#F7F7FA

surface

#EEEDF4

border

#C9C8CE

text

#09090F

muted

#7B7B7F

Preview Lab

Preview with #3F4580

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

Preview Lab → · Contrast checker → · Palette generator →