#3F58BD#3F58BD

#3F58BD is a mid, vivid blue. Relative luminance 0.117; OKLCH L 49.8% C 0.161 H 269.3°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#3F58BD
RGB	rgb(63, 88, 189)
HSL	hsl(228, 50%, 49%)
HSV	hsv(228, 67%, 74%)
CMYK	cmyk(66.7%, 53.4%, 0%, 25.9%)
CIE-LAB	lab(40.75, 23.91, -56.06)
CIE-LCH	lch(40.75, 60.95, 293.10°)
OKLab	oklab(49.82% -0.002 -0.1611)
OKLCH	oklch(49.82% 0.161 269.3)
XYZ	xyz(14.7218, 11.7090, 49.6185)
Luminance	0.1171 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F58BD #BDA43F

analogous

#3F97BD #3F58BD #653FBD

triadic

#3F58BD #BD3F58 #58BD3F

tetradic

#3F58BD #BD3F97 #BDA43F #3FBD65

square

#3F58BD #BD3F97 #BDA43F #3FBD65

split-complementary

#3F58BD #BD653F #97BD3F

monochromatic

#202D61 #30438F #3F58BD #6B7FCE #99A7DD

Accessibility & contrast

On white

6.28

#3F58BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#3F58BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F58BD

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F58BD	#FFFFFF	#000000	##FFFFFF
##3F58BD	1.00	6.28	3.34	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1266C1

Deuteranopia (green-blind)

#005BBB

Tritanopia (blue-blind)

#007082

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3f58bd;
/* rgb */ color: rgb(63, 88, 189);
/* oklch */ color: oklch(49.8% 0.161 269.3);

Tailwind

colors: {
  custom: {
    50: '#8286d2',
    500: '#3f58bd',
    950: '#000000',
  },
}

SCSS

$custom: #3f58bd;
$custom-light: #8286d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f58bd",
  "rgb": {
    "r": 63,
    "g": 88,
    "b": 189
  },
  "hsl": {
    "h": 228.095,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.49817,
    "c": 0.16109,
    "h": 269.3
  },
  "luminance": 0.1171
}

Semantic roles & 50–950 ramp

primary

#3F58BD

secondary

#C9BD8F

accent

#BE4EDA

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #3F58BD

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

Preview Lab → · Contrast checker → · Palette generator →