#3F58CA#3F58CA

#3F58CA is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.8% C 0.179 H 269.6°. Best body text is #FFFFFF at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#3F58CA
RGB	rgb(63, 88, 202)
HSL	hsl(229, 57%, 52%)
HSV	hsv(229, 69%, 79%)
CMYK	cmyk(68.8%, 56.4%, 0%, 20.8%)
CIE-LAB	lab(41.69, 28.55, -62.09)
CIE-LCH	lch(41.69, 68.34, 294.69°)
OKLab	oklab(50.82% -0.0013 -0.1788)
OKLCH	oklch(50.82% 0.179 269.6)
XYZ	xyz(16.1966, 12.2989, 57.3860)
Luminance	0.1230 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F58CA #CAB13F

analogous

#3F9DCA #3F58CA #6C3FCA

triadic

#3F58CA #CA3F58 #58CA3F

tetradic

#3F58CA #CA3F9D #CAB13F #3FCA6C

square

#3F58CA #CA3F9D #CAB13F #3FCA6C

split-complementary

#3F58CA #CA6C3F #9DCA3F

monochromatic

#1F2D70 #2C41A0 #3F58CA #6F82D7 #9FABE4

Accessibility & contrast

On white

6.07

#3F58CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#3F58CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F58CA

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F58CA	#FFFFFF	#000000	##FFFFFF
##3F58CA	1.00	6.07	3.46	6.07
#FFFFFF	6.07	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069CE

Deuteranopia (green-blind)

#005CC8

Tritanopia (blue-blind)

#007488

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3f58ca;
/* rgb */ color: rgb(63, 88, 202);
/* oklch */ color: oklch(50.8% 0.179 269.6);

Tailwind

colors: {
  custom: {
    50: '#8586db',
    500: '#3f58ca',
    950: '#000000',
  },
}

SCSS

$custom: #3f58ca;
$custom-light: #8586db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f58ca",
  "rgb": {
    "r": 63,
    "g": 88,
    "b": 202
  },
  "hsl": {
    "h": 229.209,
    "s": 56.735,
    "l": 51.961
  },
  "oklch": {
    "l": 0.50818,
    "c": 0.17881,
    "h": 269.6
  },
  "luminance": 0.123
}

Semantic roles & 50–950 ramp

primary

#3F58CA

secondary

#D1C694

accent

#C548E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F58CA

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

Preview Lab → · Contrast checker → · Palette generator →