#3E51BF#3E51BF

#3E51BF is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.5% C 0.173 H 271.1°. Best body text is #FFFFFF at 6.70:1 contrast (WCAG AA passes).

Color values

HEX	#3E51BF
RGB	rgb(62, 81, 191)
HSL	hsl(231, 51%, 50%)
HSV	hsv(231, 68%, 75%)
CMYK	cmyk(67.5%, 57.6%, 0%, 25.1%)
CIE-LAB	lab(39.02, 28.97, -60.04)
CIE-LCH	lch(39.02, 66.67, 295.76°)
OKLab	oklab(48.55% 0.0032 -0.1729)
OKLCH	oklch(48.55% 0.173 271.1)
XYZ	xyz(14.3298, 10.6692, 50.5843)
Luminance	0.1067 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3E51BF #BFAC3E

analogous

#3E91BF #3E51BF #6C3EBF

triadic

#3E51BF #BF3E51 #51BF3E

tetradic

#3E51BF #BF3E91 #BFAC3E #3EBF6C

square

#3E51BF #BF3E91 #BFAC3E #3EBF6C

split-complementary

#3E51BF #BF6C3E #91BF3E

monochromatic

#202A63 #2F3D91 #3E51BF #6B7ACF #99A3DE

Accessibility & contrast

On white

6.70

#3E51BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3E51BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3E51BF

6.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3E51BF	#FFFFFF	#000000	##FFFFFF
##3E51BF	1.00	6.70	3.13	6.70
#FFFFFF	6.70	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062C3

Deuteranopia (green-blind)

#0056BD

Tritanopia (blue-blind)

#006C80

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3e51bf;
/* rgb */ color: rgb(62, 81, 191);
/* oklch */ color: oklch(48.5% 0.173 271.1);

Tailwind

colors: {
  custom: {
    50: '#8281d3',
    500: '#3e51bf',
    950: '#000000',
  },
}

SCSS

$custom: #3e51bf;
$custom-light: #8281d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3e51bf",
  "rgb": {
    "r": 62,
    "g": 81,
    "b": 191
  },
  "hsl": {
    "h": 231.163,
    "s": 50.988,
    "l": 49.608
  },
  "oklch": {
    "l": 0.4855,
    "c": 0.17293,
    "h": 271.1
  },
  "luminance": 0.10671
}

Semantic roles & 50–950 ramp

primary

#3E51BF

secondary

#CAC18F

accent

#C64DDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3E51BF

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

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