#3F54D4#3F54D4

#3F54D4 is a mid, vivid blue. Relative luminance 0.122; OKLCH L 50.9% C 0.197 H 270.6°. Best body text is #FFFFFF at 6.12:1 contrast (WCAG AA passes).

Color values

HEX	#3F54D4
RGB	rgb(63, 84, 212)
HSL	hsl(232, 63%, 54%)
HSV	hsv(232, 70%, 83%)
CMYK	cmyk(70.3%, 60.4%, 0%, 16.9%)
CIE-LAB	lab(41.45, 34.62, -68.23)
CIE-LCH	lch(41.45, 76.51, 296.91°)
OKLab	oklab(50.88% 0.0019 -0.1969)
OKLCH	oklch(50.88% 0.197 270.6)
XYZ	xyz(17.0998, 12.1492, 63.7184)
Luminance	0.1215 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F54D4 #D4BF3F

analogous

#3F9ED4 #3F54D4 #753FD4

triadic

#3F54D4 #D43F54 #54D43F

tetradic

#3F54D4 #D43F9E #D4BF3F #3FD475

square

#3F54D4 #D43F9E #D4BF3F #3FD475

split-complementary

#3F54D4 #D4753F #9ED43F

monochromatic

#1C2A7D #273AAF #3F54D4 #7181DF #A3ADEA

Accessibility & contrast

On white

6.12

#3F54D4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#3F54D4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F54D4

6.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F54D4	#FFFFFF	#000000	##FFFFFF
##3F54D4	1.00	6.12	3.43	6.12
#FFFFFF	6.12	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D8

Deuteranopia (green-blind)

#005BD2

Tritanopia (blue-blind)

#00748C

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3f54d4;
/* rgb */ color: rgb(63, 84, 212);
/* oklch */ color: oklch(50.9% 0.197 270.6);

Tailwind

colors: {
  custom: {
    50: '#8784e2',
    500: '#3f54d4',
    950: '#000000',
  },
}

SCSS

$custom: #3f54d4;
$custom-light: #8784e2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f54d4",
  "rgb": {
    "r": 63,
    "g": 84,
    "b": 212
  },
  "hsl": {
    "h": 231.544,
    "s": 63.404,
    "l": 53.922
  },
  "oklch": {
    "l": 0.50883,
    "c": 0.19691,
    "h": 270.6
  },
  "luminance": 0.12151
}

Semantic roles & 50–950 ramp

primary

#3F54D4

secondary

#D7CE98

accent

#CF41E6

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0A15

muted

#7E7C84

Preview Lab

Preview with #3F54D4

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

Preview Lab → · Contrast checker → · Palette generator →