#3F58D4#3F58D4

#3F58D4 is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.6% C 0.192 H 269.7°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#3F58D4
RGB	rgb(63, 88, 212)
HSL	hsl(230, 63%, 54%)
HSV	hsv(230, 70%, 83%)
CMYK	cmyk(70.3%, 58.5%, 0%, 16.9%)
CIE-LAB	lab(42.44, 32.10, -66.62)
CIE-LCH	lch(42.44, 73.95, 295.73°)
OKLab	oklab(51.62% -0.0011 -0.1921)
OKLCH	oklch(51.62% 0.192 269.7)
XYZ	xyz(17.4192, 12.7879, 63.8249)
Luminance	0.1279 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F58D4 #D4BB3F

analogous

#3FA3D4 #3F58D4 #713FD4

triadic

#3F58D4 #D43F58 #58D43F

tetradic

#3F58D4 #D43FA3 #D4BB3F #3FD471

square

#3F58D4 #D43FA3 #D4BB3F #3FD471

split-complementary

#3F58D4 #D4713F #A3D43F

monochromatic

#1C2C7D #273EAF #3F58D4 #7183DF #A3AFEA

Accessibility & contrast

On white

5.90

#3F58D4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#3F58D4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F58D4

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F58D4	#FFFFFF	#000000	##FFFFFF
##3F58D4	1.00	5.90	3.56	5.90
#FFFFFF	5.90	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BD8

Deuteranopia (green-blind)

#005ED2

Tritanopia (blue-blind)

#00778D

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #3f58d4;
/* rgb */ color: rgb(63, 88, 212);
/* oklch */ color: oklch(51.6% 0.192 269.7);

Tailwind

colors: {
  custom: {
    50: '#8786e2',
    500: '#3f58d4',
    950: '#000000',
  },
}

SCSS

$custom: #3f58d4;
$custom-light: #8786e2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f58d4",
  "rgb": {
    "r": 63,
    "g": 88,
    "b": 212
  },
  "hsl": {
    "h": 229.933,
    "s": 63.404,
    "l": 53.922
  },
  "oklch": {
    "l": 0.51618,
    "c": 0.19212,
    "h": 269.7
  },
  "luminance": 0.1279
}

Semantic roles & 50–950 ramp

primary

#3F58D4

secondary

#D7CD98

accent

#CB41E6

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0B15

muted

#7E7C84

Preview Lab

Preview with #3F58D4

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

Preview Lab → · Contrast checker → · Palette generator →