#3D51BF#3D51BF

#3D51BF is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.5% C 0.173 H 270.7°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#3D51BF
RGB	rgb(61, 81, 191)
HSL	hsl(231, 52%, 49%)
HSV	hsv(231, 68%, 75%)
CMYK	cmyk(68.1%, 57.6%, 0%, 25.1%)
CIE-LAB	lab(38.96, 28.82, -60.13)
CIE-LCH	lch(38.96, 66.68, 295.61°)
OKLab	oklab(48.49% 0.0022 -0.1732)
OKLCH	oklch(48.49% 0.173 270.7)
XYZ	xyz(14.2677, 10.6372, 50.5814)
Luminance	0.1064 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3D51BF #BFAB3D

analogous

#3D92BF #3D51BF #6A3DBF

triadic

#3D51BF #BF3D51 #51BF3D

tetradic

#3D51BF #BF3D92 #BFAB3D #3DBF6A

square

#3D51BF #BF3D92 #BFAB3D #3DBF6A

split-complementary

#3D51BF #BF6A3D #92BF3D

monochromatic

#1F2A62 #2E3D91 #3D51BF #6A79CF #98A3DE

Accessibility & contrast

On white

6.71

#3D51BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3D51BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3D51BF

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D51BF	#FFFFFF	#000000	##FFFFFF
##3D51BF	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	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: #3d51bf;
/* rgb */ color: rgb(61, 81, 191);
/* oklch */ color: oklch(48.5% 0.173 270.7);

Tailwind

colors: {
  custom: {
    50: '#8281d3',
    500: '#3d51bf',
    950: '#000000',
  },
}

SCSS

$custom: #3d51bf;
$custom-light: #8281d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3d51bf",
  "rgb": {
    "r": 61,
    "g": 81,
    "b": 191
  },
  "hsl": {
    "h": 230.769,
    "s": 51.587,
    "l": 49.412
  },
  "oklch": {
    "l": 0.48494,
    "c": 0.1732,
    "h": 270.7
  },
  "luminance": 0.10639
}

Semantic roles & 50–950 ramp

primary

#3D51BF

secondary

#CAC18E

accent

#C54DDB

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3D51BF

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

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