#3D40B2#3D40B2

#3D40B2 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.3% C 0.177 H 275.3°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#3D40B2
RGB	rgb(61, 64, 178)
HSL	hsl(238, 49%, 47%)
HSV	hsv(238, 66%, 70%)
CMYK	cmyk(65.7%, 64%, 0%, 30.2%)
CIE-LAB	lab(33.72, 35.08, -61.03)
CIE-LCH	lch(33.72, 70.39, 299.89°)
OKLab	oklab(44.29% 0.0164 -0.176)
OKLCH	oklch(44.29% 0.177 275.3)
XYZ	xyz(11.7911, 7.8722, 43.0090)
Luminance	0.0787 (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

#3D40B2 #B2AF3D

analogous

#3D7AB2 #3D40B2 #753DB2

triadic

#3D40B2 #B23D40 #40B23D

tetradic

#3D40B2 #B23D7A #B2AF3D #3DB275

square

#3D40B2 #B23D7A #B2AF3D #3DB275

split-complementary

#3D40B2 #B2753D #7AB23D

monochromatic

#1E1F57 #2D3084 #3D40B2 #6365C9 #9092D9

Accessibility & contrast

On white

8.16

#3D40B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#3D40B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3D40B2

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D40B2	#FFFFFF	#000000	##FFFFFF
##3D40B2	1.00	8.16	2.57	8.16
#FFFFFF	8.16	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B6

Deuteranopia (green-blind)

#004AB0

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3d40b2;
/* rgb */ color: rgb(61, 64, 178);
/* oklch */ color: oklch(44.3% 0.177 275.3);

Tailwind

colors: {
  custom: {
    50: '#8175ca',
    500: '#3d40b2',
    950: '#000000',
  },
}

SCSS

$custom: #3d40b2;
$custom-light: #8175ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3d40b2",
  "rgb": {
    "r": 61,
    "g": 64,
    "b": 178
  },
  "hsl": {
    "h": 238.462,
    "s": 48.954,
    "l": 46.863
  },
  "oklch": {
    "l": 0.44291,
    "c": 0.17673,
    "h": 275.3
  },
  "luminance": 0.07873
}

Semantic roles & 50–950 ramp

primary

#3D40B2

secondary

#C4C387

accent

#D54FD9

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3D40B2

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

Preview Lab → · Contrast checker → · Palette generator →