#3D51BC#3D51BC

#3D51BC is a mid, vivid blue. Relative luminance 0.105; OKLCH L 48.3% C 0.169 H 270.7°. Best body text is #FFFFFF at 6.77:1 contrast (WCAG AA passes).

Color values

HEX	#3D51BC
RGB	rgb(61, 81, 188)
HSL	hsl(231, 51%, 49%)
HSV	hsv(231, 68%, 74%)
CMYK	cmyk(67.6%, 56.9%, 0%, 26.3%)
CIE-LAB	lab(38.74, 27.75, -58.75)
CIE-LCH	lch(38.74, 64.97, 295.29°)
OKLab	oklab(48.25% 0.0021 -0.1691)
OKLCH	oklch(48.25% 0.169 270.7)
XYZ	xyz(13.9409, 10.5065, 48.8605)
Luminance	0.1051 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3D51BC #BCA83D

analogous

#3D91BC #3D51BC #693DBC

triadic

#3D51BC #BC3D51 #51BC3D

tetradic

#3D51BC #BC3D91 #BCA83D #3DBC69

square

#3D51BC #BC3D91 #BCA83D #3DBC69

split-complementary

#3D51BC #BC693D #91BC3D

monochromatic

#1F2960 #2E3D8E #3D51BC #6878CE #96A1DD

Accessibility & contrast

On white

6.77

#3D51BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#3D51BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3D51BC

6.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D51BC	#FFFFFF	#000000	##FFFFFF
##3D51BC	1.00	6.77	3.10	6.77
#FFFFFF	6.77	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061C0

Deuteranopia (green-blind)

#0056BA

Tritanopia (blue-blind)

#006B7E

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3d51bc;
/* rgb */ color: rgb(61, 81, 188);
/* oklch */ color: oklch(48.3% 0.169 270.7);

Tailwind

colors: {
  custom: {
    50: '#8181d1',
    500: '#3d51bc',
    950: '#000000',
  },
}

SCSS

$custom: #3d51bc;
$custom-light: #8181d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3d51bc",
  "rgb": {
    "r": 61,
    "g": 81,
    "b": 188
  },
  "hsl": {
    "h": 230.551,
    "s": 51.004,
    "l": 48.824
  },
  "oklch": {
    "l": 0.48254,
    "c": 0.16912,
    "h": 270.7
  },
  "luminance": 0.10508
}

Semantic roles & 50–950 ramp

primary

#3D51BC

secondary

#C9BF8C

accent

#C44DDA

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #3D51BC

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

Preview Lab → · Contrast checker → · Palette generator →