#3F54CF#3F54CF

#3F54CF is a mid, vivid blue. Relative luminance 0.119; OKLCH L 50.5% C 0.190 H 270.6°. Best body text is #FFFFFF at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#3F54CF
RGB	rgb(63, 84, 207)
HSL	hsl(231, 60%, 53%)
HSV	hsv(231, 70%, 81%)
CMYK	cmyk(69.6%, 59.4%, 0%, 18.8%)
CIE-LAB	lab(41.06, 32.86, -66.00)
CIE-LCH	lch(41.06, 73.73, 296.47°)
OKLab	oklab(50.47% 0.0019 -0.1903)
OKLCH	oklch(50.47% 0.19 270.6)
XYZ	xyz(16.4789, 11.9008, 60.4480)
Luminance	0.1190 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F54CF #CFBA3F

analogous

#3F9CCF #3F54CF #723FCF

triadic

#3F54CF #CF3F54 #54CF3F

tetradic

#3F54CF #CF3F9C #CFBA3F #3FCF72

square

#3F54CF #CF3F9C #CFBA3F #3FCF72

split-complementary

#3F54CF #CF723F #9CCF3F

monochromatic

#1E2A76 #2A3CA7 #3F54CF #7080DB #A1ABE7

Accessibility & contrast

On white

6.21

#3F54CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#3F54CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F54CF

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F54CF	#FFFFFF	#000000	##FFFFFF
##3F54CF	1.00	6.21	3.38	6.21
#FFFFFF	6.21	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068D3

Deuteranopia (green-blind)

#005ACD

Tritanopia (blue-blind)

#007389

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #3f54cf;
/* rgb */ color: rgb(63, 84, 207);
/* oklch */ color: oklch(50.5% 0.190 270.6);

Tailwind

colors: {
  custom: {
    50: '#8684df',
    500: '#3f54cf',
    950: '#000000',
  },
}

SCSS

$custom: #3f54cf;
$custom-light: #8684df;
$custom-dark: #000000;

JSON

{
  "hex": "#3f54cf",
  "rgb": {
    "r": 63,
    "g": 84,
    "b": 207
  },
  "hsl": {
    "h": 231.25,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.50468,
    "c": 0.19036,
    "h": 270.6
  },
  "luminance": 0.11902
}

Semantic roles & 50–950 ramp

primary

#3F54CF

secondary

#D4CB96

accent

#CC45E3

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0D0A15

muted

#7D7C83

Preview Lab

Preview with #3F54CF

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

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