#3A40AB#3A40AB

#3A40AB is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.5% C 0.168 H 274.5°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#3A40AB
RGB	rgb(58, 64, 171)
HSL	hsl(237, 49%, 45%)
HSV	hsv(237, 66%, 67%)
CMYK	cmyk(66.1%, 62.6%, 0%, 32.9%)
CIE-LAB	lab(32.93, 32.21, -58.15)
CIE-LCH	lch(32.93, 66.47, 298.98°)
OKLab	oklab(43.48% 0.0132 -0.1676)
OKLCH	oklch(43.48% 0.168 274.5)
XYZ	xyz(10.9266, 7.5057, 39.3931)
Luminance	0.0751 (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

#3A40AB #ABA53A

analogous

#3A79AB #3A40AB #6C3AAB

triadic

#3A40AB #AB3A40 #40AB3A

tetradic

#3A40AB #AB3A79 #ABA53A #3AAB6C

square

#3A40AB #AB3A79 #ABA53A #3AAB6C

split-complementary

#3A40AB #AB6C3A #79AB3A

monochromatic

#1B1E50 #2A2F7D #3A40AB #5B61C7 #898DD7

Accessibility & contrast

On white

8.40

#3A40AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#3A40AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A40AB

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A40AB	#FFFFFF	#000000	##FFFFFF
##3A40AB	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053AE

Deuteranopia (green-blind)

#0048A9

Tritanopia (blue-blind)

#005B6F

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3a40ab;
/* rgb */ color: rgb(58, 64, 171);
/* oklch */ color: oklch(43.5% 0.168 274.5);

Tailwind

colors: {
  custom: {
    50: '#7e75c5',
    500: '#3a40ab',
    950: '#000000',
  },
}

SCSS

$custom: #3a40ab;
$custom-light: #7e75c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3a40ab",
  "rgb": {
    "r": 58,
    "g": 64,
    "b": 171
  },
  "hsl": {
    "h": 236.814,
    "s": 49.345,
    "l": 44.902
  },
  "oklch": {
    "l": 0.43482,
    "c": 0.16812,
    "h": 274.5
  },
  "luminance": 0.07507
}

Semantic roles & 50–950 ramp

primary

#3A40AB

secondary

#C1BE80

accent

#D24FD9

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3A40AB

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

Preview Lab → · Contrast checker → · Palette generator →