#3F58C6#3F58C6

#3F58C6 is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.5% C 0.173 H 269.5°. Best body text is #FFFFFF at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#3F58C6
RGB	rgb(63, 88, 198)
HSL	hsl(229, 54%, 51%)
HSV	hsv(229, 68%, 78%)
CMYK	cmyk(68.2%, 55.6%, 0%, 22.4%)
CIE-LAB	lab(41.39, 27.13, -60.25)
CIE-LCH	lch(41.39, 66.08, 294.24°)
OKLab	oklab(50.51% -0.0014 -0.1734)
OKLCH	oklch(50.51% 0.173 269.5)
XYZ	xyz(15.7292, 12.1119, 54.9240)
Luminance	0.1211 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F58C6 #C6AD3F

analogous

#3F9BC6 #3F58C6 #693FC6

triadic

#3F58C6 #C63F58 #58C63F

tetradic

#3F58C6 #C63F9B #C6AD3F #3FC669

square

#3F58C6 #C63F9B #C6AD3F #3FC669

split-complementary

#3F58C6 #C6693F #9BC63F

monochromatic

#202E6B #2E429A #3F58C6 #6E81D4 #9DAAE2

Accessibility & contrast

On white

6.14

#3F58C6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#3F58C6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F58C6

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F58C6	#FFFFFF	#000000	##FFFFFF
##3F58C6	1.00	6.14	3.42	6.14
#FFFFFF	6.14	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CA

Deuteranopia (green-blind)

#005CC4

Tritanopia (blue-blind)

#007386

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3f58c6;
/* rgb */ color: rgb(63, 88, 198);
/* oklch */ color: oklch(50.5% 0.173 269.5);

Tailwind

colors: {
  custom: {
    50: '#8486d8',
    500: '#3f58c6',
    950: '#000000',
  },
}

SCSS

$custom: #3f58c6;
$custom-light: #8486d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f58c6",
  "rgb": {
    "r": 63,
    "g": 88,
    "b": 198
  },
  "hsl": {
    "h": 228.889,
    "s": 54.217,
    "l": 51.176
  },
  "oklch": {
    "l": 0.50505,
    "c": 0.17342,
    "h": 269.5
  },
  "luminance": 0.12113
}

Semantic roles & 50–950 ramp

primary

#3F58C6

secondary

#CEC393

accent

#C24ADE

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F58C6

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

Preview Lab → · Contrast checker → · Palette generator →