#2F51BF#2F51BF

#2F51BF is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.8% C 0.177 H 266.5°. Best body text is #FFFFFF at 6.88:1 contrast (WCAG AA passes).

Color values

HEX	#2F51BF
RGB	rgb(47, 81, 191)
HSL	hsl(226, 61%, 47%)
HSV	hsv(226, 75%, 75%)
CMYK	cmyk(75.4%, 57.6%, 0%, 25.1%)
CIE-LAB	lab(38.29, 26.98, -61.26)
CIE-LCH	lch(38.29, 66.94, 293.77°)
OKLab	oklab(47.8% -0.0108 -0.1768)
OKLCH	oklch(47.8% 0.177 266.5)
XYZ	xyz(13.5154, 10.2493, 50.5461)
Luminance	0.1025 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F51BF #BF9D2F

analogous

#2F99BF #2F51BF #552FBF

triadic

#2F51BF #BF2F51 #51BF2F

tetradic

#2F51BF #BF2F99 #BF9D2F #2FBF55

square

#2F51BF #BF2F99 #BF9D2F #2FBF55

split-complementary

#2F51BF #BF552F #99BF2F

monochromatic

#17275D #233C8E #2F51BF #5674D5 #879CE1

Accessibility & contrast

On white

6.88

#2F51BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#2F51BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2F51BF

6.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F51BF	#FFFFFF	#000000	##FFFFFF
##2F51BF	1.00	6.88	3.05	6.88
#FFFFFF	6.88	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061C3

Deuteranopia (green-blind)

#0054BD

Tritanopia (blue-blind)

#006C80

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2f51bf;
/* rgb */ color: rgb(47, 81, 191);
/* oklch */ color: oklch(47.8% 0.177 266.5);

Tailwind

colors: {
  custom: {
    50: '#7c81d3',
    500: '#2f51bf',
    950: '#000000',
  },
}

SCSS

$custom: #2f51bf;
$custom-light: #7c81d3;
$custom-dark: #000000;

JSON

{
  "hex": "#2f51bf",
  "rgb": {
    "r": 47,
    "g": 81,
    "b": 191
  },
  "hsl": {
    "h": 225.833,
    "s": 60.504,
    "l": 46.667
  },
  "oklch": {
    "l": 0.47804,
    "c": 0.17713,
    "h": 266.5
  },
  "luminance": 0.10251
}

Semantic roles & 50–950 ramp

primary

#2F51BF

secondary

#CBB97F

accent

#BE44E4

background

#F8F7FD

surface

#EFEEFA

border

#CAC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #2F51BF

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

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