#2F51AB#2F51AB

#2F51AB is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.2% C 0.150 H 265.3°. Best body text is #FFFFFF at 7.28:1 contrast (WCAG AA passes).

Color values

HEX	#2F51AB
RGB	rgb(47, 81, 171)
HSL	hsl(224, 57%, 43%)
HSV	hsv(224, 73%, 67%)
CMYK	cmyk(72.5%, 52.6%, 0%, 32.9%)
CIE-LAB	lab(36.80, 19.46, -51.90)
CIE-LCH	lch(36.80, 55.43, 290.56°)
OKLab	oklab(46.21% -0.0122 -0.1493)
OKLCH	oklch(46.21% 0.15 265.3)
XYZ	xyz(11.4628, 9.4283, 39.7359)
Luminance	0.0943 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F51AB #AB892F

analogous

#2F8FAB #2F51AB #4B2FAB

triadic

#2F51AB #AB2F51 #51AB2F

tetradic

#2F51AB #AB2F8F #AB892F #2FAB4B

square

#2F51AB #AB2F8F #AB892F #2FAB4B

split-complementary

#2F51AB #AB4B2F #8FAB2F

monochromatic

#15244B #223A7B #2F51AB #4A6ECD #7A94DA

Accessibility & contrast

On white

7.28

#2F51AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#2F51AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F51AB

7.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F51AB	#FFFFFF	#000000	##FFFFFF
##2F51AB	1.00	7.28	2.89	7.28
#FFFFFF	7.28	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#155DAE

Deuteranopia (green-blind)

#0051A9

Tritanopia (blue-blind)

#006776

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #2f51ab;
/* rgb */ color: rgb(47, 81, 171);
/* oklch */ color: oklch(46.2% 0.150 265.3);

Tailwind

colors: {
  custom: {
    50: '#7881c5',
    500: '#2f51ab',
    950: '#000000',
  },
}

SCSS

$custom: #2f51ab;
$custom-light: #7881c5;
$custom-dark: #000000;

JSON

{
  "hex": "#2f51ab",
  "rgb": {
    "r": 47,
    "g": 81,
    "b": 171
  },
  "hsl": {
    "h": 223.548,
    "s": 56.881,
    "l": 42.745
  },
  "oklch": {
    "l": 0.4621,
    "c": 0.14976,
    "h": 265.3
  },
  "luminance": 0.09429
}

Semantic roles & 50–950 ramp

primary

#2F51AB

secondary

#C3AD73

accent

#B648E0

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2F51AB

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

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