#3A40B5#3A40B5

#3A40B5 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.4% C 0.181 H 274.0°. Best body text is #FFFFFF at 8.14:1 contrast (WCAG AA passes).

Color values

HEX	#3A40B5
RGB	rgb(58, 64, 181)
HSL	hsl(237, 51%, 47%)
HSV	hsv(237, 68%, 71%)
CMYK	cmyk(68%, 64.6%, 0%, 29%)
CIE-LAB	lab(33.78, 35.69, -62.72)
CIE-LCH	lch(33.78, 72.16, 299.64°)
OKLab	oklab(44.36% 0.0126 -0.181)
OKLCH	oklch(44.36% 0.181 274)
XYZ	xyz(11.9160, 7.9014, 44.6043)
Luminance	0.0790 (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

#3A40B5 #B5AF3A

analogous

#3A7EB5 #3A40B5 #723AB5

triadic

#3A40B5 #B53A40 #40B53A

tetradic

#3A40B5 #B53A7E #B5AF3A #3AB572

square

#3A40B5 #B53A7E #B5AF3A #3AB572

split-complementary

#3A40B5 #B5723A #7EB53A

monochromatic

#1C1F58 #2B3087 #3A40B5 #6065CC #8E92DB

Accessibility & contrast

On white

8.14

#3A40B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#3A40B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A40B5

8.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A40B5	#FFFFFF	#000000	##FFFFFF
##3A40B5	1.00	8.14	2.58	8.14
#FFFFFF	8.14	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B9

Deuteranopia (green-blind)

#004AB3

Tritanopia (blue-blind)

#005E74

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3a40b5;
/* rgb */ color: rgb(58, 64, 181);
/* oklch */ color: oklch(44.4% 0.181 274.0);

Tailwind

colors: {
  custom: {
    50: '#8075cc',
    500: '#3a40b5',
    950: '#000000',
  },
}

SCSS

$custom: #3a40b5;
$custom-light: #8075cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3a40b5",
  "rgb": {
    "r": 58,
    "g": 64,
    "b": 181
  },
  "hsl": {
    "h": 237.073,
    "s": 51.464,
    "l": 46.863
  },
  "oklch": {
    "l": 0.44364,
    "c": 0.18144,
    "h": 274
  },
  "luminance": 0.07903
}

Semantic roles & 50–950 ramp

primary

#3A40B5

secondary

#C6C385

accent

#D44DDB

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3A40B5

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

Preview Lab → · Contrast checker → · Palette generator →