#3B4591#3B4591

#3B4591 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.4% C 0.125 H 274.2°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#3B4591
RGB	rgb(59, 69, 145)
HSL	hsl(233, 42%, 40%)
HSV	hsv(233, 59%, 57%)
CMYK	cmyk(59.3%, 52.4%, 0%, 43.1%)
CIE-LAB	lab(32.32, 19.95, -43.41)
CIE-LCH	lch(32.32, 47.78, 294.68°)
OKLab	oklab(42.43% 0.0091 -0.1242)
OKLCH	oklch(42.43% 0.125 274.2)
XYZ	xyz(9.0409, 7.2297, 27.7016)
Luminance	0.0723 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B4591 #91873B

analogous

#3B7091 #3B4591 #5C3B91

triadic

#3B4591 #913B45 #45913B

tetradic

#3B4591 #913B70 #91873B #3B915C

square

#3B4591 #913B70 #91873B #3B915C

split-complementary

#3B4591 #915C3B #70913B

monochromatic

#181C3A #293066 #3B4591 #515DB8 #7C86CA

Accessibility & contrast

On white

8.59

#3B4591 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#3B4591 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B4591

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B4591	#FFFFFF	#000000	##FFFFFF
##3B4591	1.00	8.59	2.45	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C5094

Deuteranopia (green-blind)

#09488F

Tritanopia (blue-blind)

#005664

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3b4591;
/* rgb */ color: rgb(59, 69, 145);
/* oklch */ color: oklch(42.4% 0.125 274.2);

Tailwind

colors: {
  custom: {
    50: '#7978b2',
    500: '#3b4591',
    950: '#000000',
  },
}

SCSS

$custom: #3b4591;
$custom-light: #7978b2;
$custom-dark: #000000;

JSON

{
  "hex": "#3b4591",
  "rgb": {
    "r": 59,
    "g": 69,
    "b": 145
  },
  "hsl": {
    "h": 233.023,
    "s": 42.157,
    "l": 40
  },
  "oklch": {
    "l": 0.42425,
    "c": 0.12452,
    "h": 274.2
  },
  "luminance": 0.0723
}

Semantic roles & 50–950 ramp

primary

#3B4591

secondary

#B4AC74

accent

#C456D2

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0911

muted

#7C7B80

Preview Lab

Preview with #3B4591

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

Preview Lab → · Contrast checker → · Palette generator →