#3F54D2#3F54D2

#3F54D2 is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.7% C 0.194 H 270.6°. Best body text is #FFFFFF at 6.16:1 contrast (WCAG AA passes).

Color values

HEX	#3F54D2
RGB	rgb(63, 84, 210)
HSL	hsl(231, 62%, 54%)
HSV	hsv(231, 70%, 82%)
CMYK	cmyk(70%, 60%, 0%, 17.6%)
CIE-LAB	lab(41.29, 33.92, -67.34)
CIE-LCH	lch(41.29, 75.40, 296.74°)
OKLab	oklab(50.72% 0.0019 -0.1943)
OKLCH	oklch(50.72% 0.194 270.6)
XYZ	xyz(16.8491, 12.0489, 62.3980)
Luminance	0.1205 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F54D2 #D2BD3F

analogous

#3F9DD2 #3F54D2 #733FD2

triadic

#3F54D2 #D23F54 #54D23F

tetradic

#3F54D2 #D23F9D #D2BD3F #3FD273

square

#3F54D2 #D23F9D #D2BD3F #3FD273

split-complementary

#3F54D2 #D2733F #9DD23F

monochromatic

#1D2A7A #283BAC #3F54D2 #7180DE #A2ACE9

Accessibility & contrast

On white

6.16

#3F54D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#3F54D2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F54D2

6.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F54D2	#FFFFFF	#000000	##FFFFFF
##3F54D2	1.00	6.16	3.41	6.16
#FFFFFF	6.16	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068D6

Deuteranopia (green-blind)

#005BD0

Tritanopia (blue-blind)

#00748B

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #3f54d2;
/* rgb */ color: rgb(63, 84, 210);
/* oklch */ color: oklch(50.7% 0.194 270.6);

Tailwind

colors: {
  custom: {
    50: '#8784e1',
    500: '#3f54d2',
    950: '#000000',
  },
}

SCSS

$custom: #3f54d2;
$custom-light: #8784e1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f54d2",
  "rgb": {
    "r": 63,
    "g": 84,
    "b": 210
  },
  "hsl": {
    "h": 231.429,
    "s": 62.025,
    "l": 53.529
  },
  "oklch": {
    "l": 0.50717,
    "c": 0.1943,
    "h": 270.6
  },
  "luminance": 0.12051
}

Semantic roles & 50–950 ramp

primary

#3F54D2

secondary

#D6CD97

accent

#CE43E5

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0A15

muted

#7E7C83

Preview Lab

Preview with #3F54D2

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

Preview Lab → · Contrast checker → · Palette generator →