#3F58BE#3F58BE

#3F58BE is a mid, vivid blue. Relative luminance 0.118; OKLCH L 49.9% C 0.162 H 269.3°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#3F58BE
RGB	rgb(63, 88, 190)
HSL	hsl(228, 50%, 50%)
HSV	hsv(228, 67%, 75%)
CMYK	cmyk(66.8%, 53.7%, 0%, 25.5%)
CIE-LAB	lab(40.82, 24.27, -56.53)
CIE-LCH	lch(40.82, 61.52, 293.23°)
OKLab	oklab(49.89% -0.0019 -0.1625)
OKLCH	oklch(49.89% 0.162 269.3)
XYZ	xyz(14.8307, 11.7525, 50.1921)
Luminance	0.1175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F58BE #BEA53F

analogous

#3F98BE #3F58BE #663FBE

triadic

#3F58BE #BE3F58 #58BE3F

tetradic

#3F58BE #BE3F98 #BEA53F #3FBE66

square

#3F58BE #BE3F98 #BEA53F #3FBE66

split-complementary

#3F58BE #BE663F #98BE3F

monochromatic

#212D62 #304390 #3F58BE #6C7FCE #9AA7DD

Accessibility & contrast

On white

6.27

#3F58BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#3F58BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F58BE

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F58BE	#FFFFFF	#000000	##FFFFFF
##3F58BE	1.00	6.27	3.35	6.27
#FFFFFF	6.27	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F66C2

Deuteranopia (green-blind)

#005BBC

Tritanopia (blue-blind)

#007082

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3f58be;
/* rgb */ color: rgb(63, 88, 190);
/* oklch */ color: oklch(49.9% 0.162 269.3);

Tailwind

colors: {
  custom: {
    50: '#8286d2',
    500: '#3f58be',
    950: '#000000',
  },
}

SCSS

$custom: #3f58be;
$custom-light: #8286d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f58be",
  "rgb": {
    "r": 63,
    "g": 88,
    "b": 190
  },
  "hsl": {
    "h": 228.189,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.49892,
    "c": 0.16247,
    "h": 269.3
  },
  "luminance": 0.11754
}

Semantic roles & 50–950 ramp

primary

#3F58BE

secondary

#C9BE8F

accent

#BE4EDA

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3F58BE

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

Preview Lab → · Contrast checker → · Palette generator →