#2F51BA#2F51BA

#2F51BA is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.4% C 0.170 H 266.3°. Best body text is #FFFFFF at 6.98:1 contrast (WCAG AA passes).

Color values

HEX	#2F51BA
RGB	rgb(47, 81, 186)
HSL	hsl(225, 60%, 46%)
HSV	hsv(225, 75%, 73%)
CMYK	cmyk(74.7%, 56.5%, 0%, 27.1%)
CIE-LAB	lab(37.90, 25.11, -58.96)
CIE-LCH	lch(37.90, 64.09, 293.07°)
OKLab	oklab(47.39% -0.0111 -0.17)
OKLCH	oklch(47.39% 0.17 266.3)
XYZ	xyz(12.9745, 10.0330, 47.6976)
Luminance	0.1003 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F51BA #BA982F

analogous

#2F96BA #2F51BA #522FBA

triadic

#2F51BA #BA2F51 #51BA2F

tetradic

#2F51BA #BA2F96 #BA982F #2FBA52

square

#2F51BA #BA2F96 #BA982F #2FBA52

split-complementary

#2F51BA #BA522F #96BA2F

monochromatic

#162658 #233C89 #2F51BA #5372D3 #849AE0

Accessibility & contrast

On white

6.98

#2F51BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#2F51BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2F51BA

6.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F51BA	#FFFFFF	#000000	##FFFFFF
##2F51BA	1.00	6.98	3.01	6.98
#FFFFFF	6.98	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060BE

Deuteranopia (green-blind)

#0053B8

Tritanopia (blue-blind)

#006B7D

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #2f51ba;
/* rgb */ color: rgb(47, 81, 186);
/* oklch */ color: oklch(47.4% 0.170 266.3);

Tailwind

colors: {
  custom: {
    50: '#7b81d0',
    500: '#2f51ba',
    950: '#000000',
  },
}

SCSS

$custom: #2f51ba;
$custom-light: #7b81d0;
$custom-dark: #000000;

JSON

{
  "hex": "#2f51ba",
  "rgb": {
    "r": 47,
    "g": 81,
    "b": 186
  },
  "hsl": {
    "h": 225.324,
    "s": 59.657,
    "l": 45.686
  },
  "oklch": {
    "l": 0.47394,
    "c": 0.1704,
    "h": 266.3
  },
  "luminance": 0.10034
}

Semantic roles & 50–950 ramp

primary

#2F51BA

secondary

#C9B67C

accent

#BC45E3

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #2F51BA

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

Preview Lab → · Contrast checker → · Palette generator →