#2F51B3#2F51B3

#2F51B3 is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.8% C 0.161 H 265.9°. Best body text is #FFFFFF at 7.12:1 contrast (WCAG AA passes).

Color values

HEX	#2F51B3
RGB	rgb(47, 81, 179)
HSL	hsl(225, 58%, 44%)
HSV	hsv(225, 74%, 70%)
CMYK	cmyk(73.7%, 54.7%, 0%, 29.8%)
CIE-LAB	lab(37.38, 22.48, -55.69)
CIE-LCH	lch(37.38, 60.06, 291.98°)
OKLab	oklab(46.83% -0.0115 -0.1604)
OKLCH	oklch(46.83% 0.161 265.9)
XYZ	xyz(12.2485, 9.7426, 43.8741)
Luminance	0.0974 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F51B3 #B3912F

analogous

#2F93B3 #2F51B3 #4F2FB3

triadic

#2F51B3 #B32F51 #51B32F

tetradic

#2F51B3 #B32F93 #B3912F #2FB34F

square

#2F51B3 #B32F93 #B3912F #2FB34F

split-complementary

#2F51B3 #B34F2F #93B32F

monochromatic

#162552 #223B83 #2F51B3 #4F70D1 #7F97DD

Accessibility & contrast

On white

7.12

#2F51B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#2F51B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F51B3

7.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F51B3	#FFFFFF	#000000	##FFFFFF
##2F51B3	1.00	7.12	2.95	7.12
#FFFFFF	7.12	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EB6

Deuteranopia (green-blind)

#0052B1

Tritanopia (blue-blind)

#00697A

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #2f51b3;
/* rgb */ color: rgb(47, 81, 179);
/* oklch */ color: oklch(46.8% 0.161 265.9);

Tailwind

colors: {
  custom: {
    50: '#7a81ca',
    500: '#2f51b3',
    950: '#000000',
  },
}

SCSS

$custom: #2f51b3;
$custom-light: #7a81ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2f51b3",
  "rgb": {
    "r": 47,
    "g": 81,
    "b": 179
  },
  "hsl": {
    "h": 224.545,
    "s": 58.407,
    "l": 44.314
  },
  "oklch": {
    "l": 0.46833,
    "c": 0.16084,
    "h": 265.9
  },
  "luminance": 0.09744
}

Semantic roles & 50–950 ramp

primary

#2F51B3

secondary

#C6B278

accent

#BA46E2

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2F51B3

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

Preview Lab → · Contrast checker → · Palette generator →