#3A40BF#3A40BF

#3A40BF is a mid, vivid blue. Relative luminance 0.083; OKLCH L 45.3% C 0.194 H 273.5°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#3A40BF
RGB	rgb(58, 64, 191)
HSL	hsl(237, 53%, 49%)
HSV	hsv(237, 70%, 75%)
CMYK	cmyk(69.6%, 66.5%, 0%, 25.1%)
CIE-LAB	lab(34.65, 39.14, -67.17)
CIE-LCH	lch(34.65, 77.75, 300.23°)
OKLab	oklab(45.27% 0.0118 -0.1941)
OKLCH	oklch(45.27% 0.194 273.5)
XYZ	xyz(12.9791, 8.3267, 50.2033)
Luminance	0.0833 (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

#3A40BF #BFB93A

analogous

#3A83BF #3A40BF #773ABF

triadic

#3A40BF #BF3A40 #40BF3A

tetradic

#3A40BF #BF3A83 #BFB93A #3ABF77

square

#3A40BF #BF3A83 #BFB93A #3ABF77

split-complementary

#3A40BF #BF773A #83BF3A

monochromatic

#1D2161 #2C3090 #3A40BF #666BD0 #9598DF

Accessibility & contrast

On white

7.88

#3A40BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#3A40BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A40BF

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A40BF	#FFFFFF	#000000	##FFFFFF
##3A40BF	1.00	7.88	2.67	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C3

Deuteranopia (green-blind)

#004BBD

Tritanopia (blue-blind)

#00627A

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3a40bf;
/* rgb */ color: rgb(58, 64, 191);
/* oklch */ color: oklch(45.3% 0.194 273.5);

Tailwind

colors: {
  custom: {
    50: '#8275d3',
    500: '#3a40bf',
    950: '#000000',
  },
}

SCSS

$custom: #3a40bf;
$custom-light: #8275d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3a40bf",
  "rgb": {
    "r": 58,
    "g": 64,
    "b": 191
  },
  "hsl": {
    "h": 237.293,
    "s": 53.414,
    "l": 48.824
  },
  "oklch": {
    "l": 0.45273,
    "c": 0.19442,
    "h": 273.5
  },
  "luminance": 0.08328
}

Semantic roles & 50–950 ramp

primary

#3A40BF

secondary

#CAC78B

accent

#D64BDD

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3A40BF

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

Preview Lab → · Contrast checker → · Palette generator →