#2F51AA#2F51AA

#2F51AA is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.1% C 0.148 H 265.2°. Best body text is #FFFFFF at 7.30:1 contrast (WCAG AA passes).

Color values

HEX	#2F51AA
RGB	rgb(47, 81, 170)
HSL	hsl(223, 57%, 43%)
HSV	hsv(223, 72%, 67%)
CMYK	cmyk(72.4%, 52.4%, 0%, 33.3%)
CIE-LAB	lab(36.73, 19.09, -51.42)
CIE-LCH	lch(36.73, 54.84, 290.36°)
OKLab	oklab(46.13% -0.0123 -0.1478)
OKLCH	oklch(46.13% 0.148 265.2)
XYZ	xyz(11.3679, 9.3903, 39.2358)
Luminance	0.0939 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F51AA #AA882F

analogous

#2F8EAA #2F51AA #4B2FAA

triadic

#2F51AA #AA2F51 #51AA2F

tetradic

#2F51AA #AA2F8E #AA882F #2FAA4B

square

#2F51AA #AA2F8E #AA882F #2FAA4B

split-complementary

#2F51AA #AA4B2F #8EAA2F

monochromatic

#14234A #223A7A #2F51AA #496ECD #7994DA

Accessibility & contrast

On white

7.30

#2F51AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#2F51AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F51AA

7.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F51AA	#FFFFFF	#000000	##FFFFFF
##2F51AA	1.00	7.30	2.88	7.30
#FFFFFF	7.30	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#175CAD

Deuteranopia (green-blind)

#0051A8

Tritanopia (blue-blind)

#006675

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #2f51aa;
/* rgb */ color: rgb(47, 81, 170);
/* oklch */ color: oklch(46.1% 0.148 265.2);

Tailwind

colors: {
  custom: {
    50: '#7881c4',
    500: '#2f51aa',
    950: '#000000',
  },
}

SCSS

$custom: #2f51aa;
$custom-light: #7881c4;
$custom-dark: #000000;

JSON

{
  "hex": "#2f51aa",
  "rgb": {
    "r": 47,
    "g": 81,
    "b": 170
  },
  "hsl": {
    "h": 223.415,
    "s": 56.682,
    "l": 42.549
  },
  "oklch": {
    "l": 0.46134,
    "c": 0.14836,
    "h": 265.2
  },
  "luminance": 0.09391
}

Semantic roles & 50–950 ramp

primary

#2F51AA

secondary

#C2AC72

accent

#B648E0

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2F51AA

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

Preview Lab → · Contrast checker → · Palette generator →