#3A40BA#3A40BA

#3A40BA is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.8% C 0.188 H 273.7°. Best body text is #FFFFFF at 8.01:1 contrast (WCAG AA passes).

Color values

HEX	#3A40BA
RGB	rgb(58, 64, 186)
HSL	hsl(237, 52%, 48%)
HSV	hsv(237, 69%, 73%)
CMYK	cmyk(68.8%, 65.6%, 0%, 27.1%)
CIE-LAB	lab(34.21, 37.42, -64.96)
CIE-LCH	lch(34.21, 74.97, 299.95°)
OKLab	oklab(44.82% 0.0122 -0.1876)
OKLCH	oklch(44.82% 0.188 273.7)
XYZ	xyz(12.4383, 8.1103, 47.3548)
Luminance	0.0811 (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

#3A40BA #BAB43A

analogous

#3A80BA #3A40BA #743ABA

triadic

#3A40BA #BA3A40 #40BA3A

tetradic

#3A40BA #BA3A80 #BAB43A #3ABA74

square

#3A40BA #BA3A80 #BAB43A #3ABA74

split-complementary

#3A40BA #BA743A #80BA3A

monochromatic

#1D205D #2B308B #3A40BA #6368CE #9295DD

Accessibility & contrast

On white

8.01

#3A40BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#3A40BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A40BA

8.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A40BA	#FFFFFF	#000000	##FFFFFF
##3A40BA	1.00	8.01	2.62	8.01
#FFFFFF	8.01	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BE

Deuteranopia (green-blind)

#004BB8

Tritanopia (blue-blind)

#006077

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3a40ba;
/* rgb */ color: rgb(58, 64, 186);
/* oklch */ color: oklch(44.8% 0.188 273.7);

Tailwind

colors: {
  custom: {
    50: '#8175d0',
    500: '#3a40ba',
    950: '#000000',
  },
}

SCSS

$custom: #3a40ba;
$custom-light: #8175d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3a40ba",
  "rgb": {
    "r": 58,
    "g": 64,
    "b": 186
  },
  "hsl": {
    "h": 237.188,
    "s": 52.459,
    "l": 47.843
  },
  "oklch": {
    "l": 0.44815,
    "c": 0.18797,
    "h": 273.7
  },
  "luminance": 0.08112
}

Semantic roles & 50–950 ramp

primary

#3A40BA

secondary

#C8C588

accent

#D54CDC

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3A40BA

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

Preview Lab → · Contrast checker → · Palette generator →