#3F58C7#3F58C7

#3F58C7 is a mid, vivid blue. Relative luminance 0.122; OKLCH L 50.6% C 0.175 H 269.5°. Best body text is #FFFFFF at 6.12:1 contrast (WCAG AA passes).

Color values

HEX	#3F58C7
RGB	rgb(63, 88, 199)
HSL	hsl(229, 55%, 51%)
HSV	hsv(229, 68%, 78%)
CMYK	cmyk(68.3%, 55.8%, 0%, 22%)
CIE-LAB	lab(41.47, 27.48, -60.71)
CIE-LCH	lch(41.47, 66.64, 294.35°)
OKLab	oklab(50.58% -0.0014 -0.1748)
OKLCH	oklch(50.58% 0.175 269.5)
XYZ	xyz(15.8449, 12.1582, 55.5335)
Luminance	0.1216 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F58C7 #C7AE3F

analogous

#3F9CC7 #3F58C7 #6A3FC7

triadic

#3F58C7 #C73F58 #58C73F

tetradic

#3F58C7 #C73F9C #C7AE3F #3FC76A

square

#3F58C7 #C73F9C #C7AE3F #3FC76A

split-complementary

#3F58C7 #C76A3F #9CC73F

monochromatic

#202E6C #2D429B #3F58C7 #6E81D5 #9EAAE3

Accessibility & contrast

On white

6.12

#3F58C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#3F58C7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F58C7

6.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F58C7	#FFFFFF	#000000	##FFFFFF
##3F58C7	1.00	6.12	3.43	6.12
#FFFFFF	6.12	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CB

Deuteranopia (green-blind)

#005CC5

Tritanopia (blue-blind)

#007387

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3f58c7;
/* rgb */ color: rgb(63, 88, 199);
/* oklch */ color: oklch(50.6% 0.175 269.5);

Tailwind

colors: {
  custom: {
    50: '#8486d9',
    500: '#3f58c7',
    950: '#000000',
  },
}

SCSS

$custom: #3f58c7;
$custom-light: #8486d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f58c7",
  "rgb": {
    "r": 63,
    "g": 88,
    "b": 199
  },
  "hsl": {
    "h": 228.971,
    "s": 54.839,
    "l": 51.373
  },
  "oklch": {
    "l": 0.50583,
    "c": 0.17477,
    "h": 269.5
  },
  "luminance": 0.1216
}

Semantic roles & 50–950 ramp

primary

#3F58C7

secondary

#CFC493

accent

#C34ADE

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F58C7

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

Preview Lab → · Contrast checker → · Palette generator →