#3F4591#3F4591

#3F4591 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 42.7% C 0.123 H 276.4°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#3F4591
RGB	rgb(63, 69, 145)
HSL	hsl(236, 39%, 41%)
HSV	hsv(236, 57%, 57%)
CMYK	cmyk(56.6%, 52.4%, 0%, 43.1%)
CIE-LAB	lab(32.61, 20.79, -42.94)
CIE-LCH	lch(32.61, 47.71, 295.83°)
OKLab	oklab(42.71% 0.0138 -0.1227)
OKLCH	oklch(42.71% 0.123 276.4)
XYZ	xyz(9.2872, 7.3567, 27.7132)
Luminance	0.0736 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4591 #918B3F

analogous

#3F6E91 #3F4591 #623F91

triadic

#3F4591 #913F45 #45913F

tetradic

#3F4591 #913F6E #918B3F #3F9162

square

#3F4591 #913F6E #918B3F #3F9162

split-complementary

#3F4591 #91623F #6E913F

monochromatic

#1A1C3C #2C3166 #3F4591 #575EB6 #8287C9

Accessibility & contrast

On white

8.50

#3F4591 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3F4591 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4591

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4591	#FFFFFF	#000000	##FFFFFF
##3F4591	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D5094

Deuteranopia (green-blind)

#0F498F

Tritanopia (blue-blind)

#145664

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3f4591;
/* rgb */ color: rgb(63, 69, 145);
/* oklch */ color: oklch(42.7% 0.123 276.4);

Tailwind

colors: {
  custom: {
    50: '#7b78b2',
    500: '#3f4591',
    950: '#000000',
  },
}

SCSS

$custom: #3f4591;
$custom-light: #7b78b2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4591",
  "rgb": {
    "r": 63,
    "g": 69,
    "b": 145
  },
  "hsl": {
    "h": 235.61,
    "s": 39.423,
    "l": 40.784
  },
  "oklch": {
    "l": 0.4271,
    "c": 0.12349,
    "h": 276.4
  },
  "luminance": 0.07357
}

Semantic roles & 50–950 ramp

primary

#3F4591

secondary

#B3AF79

accent

#C758CF

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0911

muted

#7C7B80

Preview Lab

Preview with #3F4591

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

Preview Lab → · Contrast checker → · Palette generator →