#3A40B4#3A40B4

#3A40B4 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.3% C 0.180 H 274.0°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#3A40B4
RGB	rgb(58, 64, 180)
HSL	hsl(237, 51%, 47%)
HSV	hsv(237, 68%, 71%)
CMYK	cmyk(67.8%, 64.4%, 0%, 29.4%)
CIE-LAB	lab(33.69, 35.34, -62.26)
CIE-LCH	lch(33.69, 71.60, 299.58°)
OKLab	oklab(44.27% 0.0127 -0.1797)
OKLCH	oklch(44.27% 0.18 274)
XYZ	xyz(11.8138, 7.8605, 44.0658)
Luminance	0.0786 (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

#3A40B4 #B4AE3A

analogous

#3A7DB4 #3A40B4 #713AB4

triadic

#3A40B4 #B43A40 #40B43A

tetradic

#3A40B4 #B43A7D #B4AE3A #3AB471

square

#3A40B4 #B43A7D #B4AE3A #3AB471

split-complementary

#3A40B4 #B4713A #7DB43A

monochromatic

#1C1F57 #2B3086 #3A40B4 #6065CC #8E92DB

Accessibility & contrast

On white

8.16

#3A40B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#3A40B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A40B4

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A40B4	#FFFFFF	#000000	##FFFFFF
##3A40B4	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)

#0055B8

Deuteranopia (green-blind)

#004AB2

Tritanopia (blue-blind)

#005E74

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3a40b4;
/* rgb */ color: rgb(58, 64, 180);
/* oklch */ color: oklch(44.3% 0.180 274.0);

Tailwind

colors: {
  custom: {
    50: '#8075cb',
    500: '#3a40b4',
    950: '#000000',
  },
}

SCSS

$custom: #3a40b4;
$custom-light: #8075cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3a40b4",
  "rgb": {
    "r": 58,
    "g": 64,
    "b": 180
  },
  "hsl": {
    "h": 237.049,
    "s": 51.261,
    "l": 46.667
  },
  "oklch": {
    "l": 0.44274,
    "c": 0.18012,
    "h": 274
  },
  "luminance": 0.07862
}

Semantic roles & 50–950 ramp

primary

#3A40B4

secondary

#C5C285

accent

#D44DDB

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3A40B4

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

Preview Lab → · Contrast checker → · Palette generator →