#3F58BF#3F58BF

#3F58BF is a mid, vivid blue. Relative luminance 0.118; OKLCH L 50.0% C 0.164 H 269.4°. Best body text is #FFFFFF at 6.25:1 contrast (WCAG AA passes).

Color values

HEX	#3F58BF
RGB	rgb(63, 88, 191)
HSL	hsl(228, 50%, 50%)
HSV	hsv(228, 67%, 75%)
CMYK	cmyk(67%, 53.9%, 0%, 25.1%)
CIE-LAB	lab(40.89, 24.62, -57.00)
CIE-LCH	lch(40.89, 62.09, 293.36°)
OKLab	oklab(49.97% -0.0018 -0.1638)
OKLCH	oklch(49.97% 0.164 269.4)
XYZ	xyz(14.9404, 11.7964, 50.7697)
Luminance	0.1180 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F58BF #BFA63F

analogous

#3F98BF #3F58BF #663FBF

triadic

#3F58BF #BF3F58 #58BF3F

tetradic

#3F58BF #BF3F98 #BFA63F #3FBF66

square

#3F58BF #BF3F98 #BFA63F #3FBF66

split-complementary

#3F58BF #BF663F #98BF3F

monochromatic

#212E63 #304391 #3F58BF #6D80CF #9BA8DE

Accessibility & contrast

On white

6.25

#3F58BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#3F58BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F58BF

6.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F58BF	#FFFFFF	#000000	##FFFFFF
##3F58BF	1.00	6.25	3.36	6.25
#FFFFFF	6.25	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C66C3

Deuteranopia (green-blind)

#005BBD

Tritanopia (blue-blind)

#007183

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3f58bf;
/* rgb */ color: rgb(63, 88, 191);
/* oklch */ color: oklch(50.0% 0.164 269.4);

Tailwind

colors: {
  custom: {
    50: '#8286d3',
    500: '#3f58bf',
    950: '#000000',
  },
}

SCSS

$custom: #3f58bf;
$custom-light: #8286d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f58bf",
  "rgb": {
    "r": 63,
    "g": 88,
    "b": 191
  },
  "hsl": {
    "h": 228.281,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.49968,
    "c": 0.16385,
    "h": 269.4
  },
  "luminance": 0.11798
}

Semantic roles & 50–950 ramp

primary

#3F58BF

secondary

#CABF90

accent

#BF4EDA

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3F58BF

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

Preview Lab → · Contrast checker → · Palette generator →