#3A40BC#3A40BC

#3A40BC is a dark, vivid blue. Relative luminance 0.082; OKLCH L 45.0% C 0.191 H 273.6°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#3A40BC
RGB	rgb(58, 64, 188)
HSL	hsl(237, 53%, 48%)
HSV	hsv(237, 69%, 74%)
CMYK	cmyk(69.1%, 66%, 0%, 26.3%)
CIE-LAB	lab(34.39, 38.11, -65.85)
CIE-LCH	lch(34.39, 76.08, 300.06°)
OKLab	oklab(45% 0.0121 -0.1902)
OKLCH	oklch(45% 0.191 273.6)
XYZ	xyz(12.6524, 8.1960, 48.4824)
Luminance	0.0820 (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

#3A40BC #BCB63A

analogous

#3A81BC #3A40BC #753ABC

triadic

#3A40BC #BC3A40 #40BC3A

tetradic

#3A40BC #BC3A81 #BCB63A #3ABC75

square

#3A40BC #BC3A81 #BCB63A #3ABC75

split-complementary

#3A40BC #BC753A #81BC3A

monochromatic

#1D205E #2C308D #3A40BC #6469CF #9396DE

Accessibility & contrast

On white

7.96

#3A40BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#3A40BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A40BC

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A40BC	#FFFFFF	#000000	##FFFFFF
##3A40BC	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C0

Deuteranopia (green-blind)

#004BBA

Tritanopia (blue-blind)

#006178

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3a40bc;
/* rgb */ color: rgb(58, 64, 188);
/* oklch */ color: oklch(45.0% 0.191 273.6);

Tailwind

colors: {
  custom: {
    50: '#8175d1',
    500: '#3a40bc',
    950: '#000000',
  },
}

SCSS

$custom: #3a40bc;
$custom-light: #8175d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3a40bc",
  "rgb": {
    "r": 58,
    "g": 64,
    "b": 188
  },
  "hsl": {
    "h": 237.231,
    "s": 52.846,
    "l": 48.235
  },
  "oklch": {
    "l": 0.44997,
    "c": 0.19056,
    "h": 273.6
  },
  "luminance": 0.08197
}

Semantic roles & 50–950 ramp

primary

#3A40BC

secondary

#C9C689

accent

#D64CDC

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3A40BC

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

Preview Lab → · Contrast checker → · Palette generator →