#2F51D4#2F51D4

#2F51D4 is a mid, highly saturated blue. Relative luminance 0.112; OKLCH L 49.6% C 0.205 H 267.1°. Best body text is #FFFFFF at 6.46:1 contrast (WCAG AA passes).

Color values

HEX	#2F51D4
RGB	rgb(47, 81, 212)
HSL	hsl(228, 66%, 51%)
HSV	hsv(228, 78%, 83%)
CMYK	cmyk(77.8%, 61.8%, 0%, 16.9%)
CIE-LAB	lab(39.98, 34.74, -70.66)
CIE-LCH	lch(39.98, 78.74, 296.18°)
OKLab	oklab(49.6% -0.0105 -0.2044)
OKLCH	oklch(49.6% 0.205 267.1)
XYZ	xyz(15.9942, 11.2408, 63.6013)
Luminance	0.1124 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F51D4 #D4B22F

analogous

#2FA4D4 #2F51D4 #5F2FD4

triadic

#2F51D4 #D42F51 #51D42F

tetradic

#2F51D4 #D42FA4 #D4B22F #2FD45F

square

#2F51D4 #D42FA4 #D4B22F #2FD45F

split-complementary

#2F51D4 #D45F2F #A4D42F

monochromatic

#172A71 #223DA4 #2F51D4 #627BDE #94A6E9

Accessibility & contrast

On white

6.46

#2F51D4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#2F51D4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2F51D4

6.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F51D4	#FFFFFF	#000000	##FFFFFF
##2F51D4	1.00	6.46	3.25	6.46
#FFFFFF	6.46	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066D8

Deuteranopia (green-blind)

#0057D2

Tritanopia (blue-blind)

#00738B

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #2f51d4;
/* rgb */ color: rgb(47, 81, 212);
/* oklch */ color: oklch(49.6% 0.205 267.1);

Tailwind

colors: {
  custom: {
    50: '#8181e2',
    500: '#2f51d4',
    950: '#000000',
  },
}

SCSS

$custom: #2f51d4;
$custom-light: #8181e2;
$custom-dark: #000000;

JSON

{
  "hex": "#2f51d4",
  "rgb": {
    "r": 47,
    "g": 81,
    "b": 212
  },
  "hsl": {
    "h": 227.636,
    "s": 65.737,
    "l": 50.784
  },
  "oklch": {
    "l": 0.49595,
    "c": 0.20465,
    "h": 267.1
  },
  "luminance": 0.11243
}

Semantic roles & 50–950 ramp

primary

#2F51D4

secondary

#D4C58B

accent

#C63FE9

background

#F8F7FE

surface

#F0EEFC

border

#CBC9D5

text

#0C0A15

muted

#7D7C84

Preview Lab

Preview with #2F51D4

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

Preview Lab → · Contrast checker → · Palette generator →