#3A40B2#3A40B2

#3A40B2 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.1% C 0.177 H 274.1°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#3A40B2
RGB	rgb(58, 64, 178)
HSL	hsl(237, 51%, 46%)
HSV	hsv(237, 67%, 70%)
CMYK	cmyk(67.4%, 64%, 0%, 30.2%)
CIE-LAB	lab(33.52, 34.65, -61.36)
CIE-LCH	lch(33.52, 70.46, 299.45°)
OKLab	oklab(44.1% 0.0128 -0.177)
OKLCH	oklch(44.1% 0.177 274.1)
XYZ	xyz(11.6115, 7.7796, 43.0005)
Luminance	0.0778 (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

#3A40B2 #B2AC3A

analogous

#3A7CB2 #3A40B2 #703AB2

triadic

#3A40B2 #B23A40 #40B23A

tetradic

#3A40B2 #B23A7C #B2AC3A #3AB270

square

#3A40B2 #B23A7C #B2AC3A #3AB270

split-complementary

#3A40B2 #B2703A #7CB23A

monochromatic

#1C1F56 #2B2F84 #3A40B2 #5F64CB #8D91DA

Accessibility & contrast

On white

8.22

#3A40B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#3A40B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A40B2

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A40B2	#FFFFFF	#000000	##FFFFFF
##3A40B2	1.00	8.22	2.56	8.22
#FFFFFF	8.22	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B6

Deuteranopia (green-blind)

#0049B0

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3a40b2;
/* rgb */ color: rgb(58, 64, 178);
/* oklch */ color: oklch(44.1% 0.177 274.1);

Tailwind

colors: {
  custom: {
    50: '#7f75ca',
    500: '#3a40b2',
    950: '#000000',
  },
}

SCSS

$custom: #3a40b2;
$custom-light: #7f75ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3a40b2",
  "rgb": {
    "r": 58,
    "g": 64,
    "b": 178
  },
  "hsl": {
    "h": 237,
    "s": 50.847,
    "l": 46.275
  },
  "oklch": {
    "l": 0.44096,
    "c": 0.17749,
    "h": 274.1
  },
  "luminance": 0.07781
}

Semantic roles & 50–950 ramp

primary

#3A40B2

secondary

#C4C183

accent

#D34DDA

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3A40B2

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

Preview Lab → · Contrast checker → · Palette generator →