#2F51D3#2F51D3

#2F51D3 is a mid, highly saturated blue. Relative luminance 0.112; OKLCH L 49.5% C 0.203 H 267.0°. Best body text is #FFFFFF at 6.48:1 contrast (WCAG AA passes).

Color values

HEX	#2F51D3
RGB	rgb(47, 81, 211)
HSL	hsl(228, 65%, 51%)
HSV	hsv(228, 78%, 83%)
CMYK	cmyk(77.7%, 61.6%, 0%, 17.3%)
CIE-LAB	lab(39.90, 34.37, -70.22)
CIE-LCH	lch(39.90, 78.19, 296.08°)
OKLab	oklab(49.51% -0.0105 -0.2031)
OKLCH	oklch(49.51% 0.203 267)
XYZ	xyz(15.8685, 11.1905, 62.9390)
Luminance	0.1119 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F51D3 #D3B12F

analogous

#2FA3D3 #2F51D3 #5F2FD3

triadic

#2F51D3 #D32F51 #51D32F

tetradic

#2F51D3 #D32FA3 #D3B12F #2FD35F

square

#2F51D3 #D32FA3 #D3B12F #2FD35F

split-complementary

#2F51D3 #D35F2F #A3D32F

monochromatic

#182A70 #223DA2 #2F51D3 #627BDE #94A6E8

Accessibility & contrast

On white

6.48

#2F51D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#2F51D3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2F51D3

6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F51D3	#FFFFFF	#000000	##FFFFFF
##2F51D3	1.00	6.48	3.24	6.48
#FFFFFF	6.48	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066D7

Deuteranopia (green-blind)

#0057D1

Tritanopia (blue-blind)

#00738A

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #2f51d3;
/* rgb */ color: rgb(47, 81, 211);
/* oklch */ color: oklch(49.5% 0.203 267.0);

Tailwind

colors: {
  custom: {
    50: '#8181e2',
    500: '#2f51d3',
    950: '#000000',
  },
}

SCSS

$custom: #2f51d3;
$custom-light: #8181e2;
$custom-dark: #000000;

JSON

{
  "hex": "#2f51d3",
  "rgb": {
    "r": 47,
    "g": 81,
    "b": 211
  },
  "hsl": {
    "h": 227.561,
    "s": 65.079,
    "l": 50.588
  },
  "oklch": {
    "l": 0.49508,
    "c": 0.20337,
    "h": 267
  },
  "luminance": 0.11192
}

Semantic roles & 50–950 ramp

primary

#2F51D3

secondary

#D3C48A

accent

#C540E8

background

#F8F7FE

surface

#F0EEFC

border

#CBC9D5

text

#0C0A15

muted

#7D7C84

Preview Lab

Preview with #2F51D3

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

Preview Lab → · Contrast checker → · Palette generator →