#3B40AF#3B40AF

#3B40AF is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.9% C 0.173 H 274.7°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#3B40AF
RGB	rgb(59, 64, 175)
HSL	hsl(237, 50%, 46%)
HSV	hsv(237, 66%, 69%)
CMYK	cmyk(66.3%, 63.4%, 0%, 31.4%)
CIE-LAB	lab(33.33, 33.75, -59.88)
CIE-LCH	lch(33.33, 68.74, 299.41°)
OKLab	oklab(43.9% 0.0142 -0.1727)
OKLCH	oklch(43.9% 0.173 274.7)
XYZ	xyz(11.3723, 7.6907, 41.4343)
Luminance	0.0769 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B40AF #AFAA3B

analogous

#3B7AAF #3B40AF #703BAF

triadic

#3B40AF #AF3B40 #40AF3B

tetradic

#3B40AF #AF3B7A #AFAA3B #3BAF70

square

#3B40AF #AF3B7A #AFAA3B #3BAF70

split-complementary

#3B40AF #AF703B #7AAF3B

monochromatic

#1C1F53 #2C2F81 #3B40AF #5E63C9 #8C8FD8

Accessibility & contrast

On white

8.27

#3B40AF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#3B40AF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B40AF

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B40AF	#FFFFFF	#000000	##FFFFFF
##3B40AF	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B3

Deuteranopia (green-blind)

#0049AD

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3b40af;
/* rgb */ color: rgb(59, 64, 175);
/* oklch */ color: oklch(43.9% 0.173 274.7);

Tailwind

colors: {
  custom: {
    50: '#7f75c8',
    500: '#3b40af',
    950: '#000000',
  },
}

SCSS

$custom: #3b40af;
$custom-light: #7f75c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3b40af",
  "rgb": {
    "r": 59,
    "g": 64,
    "b": 175
  },
  "hsl": {
    "h": 237.414,
    "s": 49.573,
    "l": 45.882
  },
  "oklch": {
    "l": 0.43896,
    "c": 0.17324,
    "h": 274.7
  },
  "luminance": 0.07692
}

Semantic roles & 50–950 ramp

primary

#3B40AF

secondary

#C3C083

accent

#D34FD9

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3B40AF

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

Preview Lab → · Contrast checker → · Palette generator →