#3F58D0#3F58D0

#3F58D0 is a mid, vivid blue. Relative luminance 0.126; OKLCH L 51.3% C 0.187 H 269.7°. Best body text is #FFFFFF at 5.97:1 contrast (WCAG AA passes).

Color values

HEX	#3F58D0
RGB	rgb(63, 88, 208)
HSL	hsl(230, 61%, 53%)
HSV	hsv(230, 70%, 82%)
CMYK	cmyk(69.7%, 57.7%, 0%, 18.4%)
CIE-LAB	lab(42.14, 30.69, -64.82)
CIE-LCH	lch(42.14, 71.72, 295.33°)
OKLab	oklab(51.3% -0.0011 -0.1868)
OKLCH	oklch(51.3% 0.187 269.7)
XYZ	xyz(16.9209, 12.5886, 61.2004)
Luminance	0.1259 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F58D0 #D0B73F

analogous

#3FA0D0 #3F58D0 #6E3FD0

triadic

#3F58D0 #D03F58 #58D03F

tetradic

#3F58D0 #D03FA0 #D0B73F #3FD06E

square

#3F58D0 #D03FA0 #D0B73F #3FD06E

split-complementary

#3F58D0 #D06E3F #A0D03F

monochromatic

#1D2D77 #293FA9 #3F58D0 #7083DC #A1AEE8

Accessibility & contrast

On white

5.97

#3F58D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#3F58D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F58D0

5.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F58D0	#FFFFFF	#000000	##FFFFFF
##3F58D0	1.00	5.97	3.52	5.97
#FFFFFF	5.97	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AD4

Deuteranopia (green-blind)

#005DCE

Tritanopia (blue-blind)

#00768B

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3f58d0;
/* rgb */ color: rgb(63, 88, 208);
/* oklch */ color: oklch(51.3% 0.187 269.7);

Tailwind

colors: {
  custom: {
    50: '#8686df',
    500: '#3f58d0',
    950: '#000000',
  },
}

SCSS

$custom: #3f58d0;
$custom-light: #8686df;
$custom-dark: #000000;

JSON

{
  "hex": "#3f58d0",
  "rgb": {
    "r": 63,
    "g": 88,
    "b": 208
  },
  "hsl": {
    "h": 229.655,
    "s": 60.669,
    "l": 53.137
  },
  "oklch": {
    "l": 0.51295,
    "c": 0.18683,
    "h": 269.7
  },
  "luminance": 0.1259
}

Semantic roles & 50–950 ramp

primary

#3F58D0

secondary

#D5CA96

accent

#C844E4

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0D0B15

muted

#7D7C83

Preview Lab

Preview with #3F58D0

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

Preview Lab → · Contrast checker → · Palette generator →