#3F59D6#3F59D6

#3F59D6 is a mid, vivid blue. Relative luminance 0.131; OKLCH L 52.0% C 0.194 H 269.5°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#3F59D6
RGB	rgb(63, 89, 214)
HSL	hsl(230, 65%, 54%)
HSV	hsv(230, 71%, 84%)
CMYK	cmyk(70.6%, 58.4%, 0%, 16.1%)
CIE-LAB	lab(42.85, 32.18, -67.11)
CIE-LCH	lch(42.85, 74.42, 295.62°)
OKLab	oklab(51.97% -0.0018 -0.1935)
OKLCH	oklch(51.97% 0.194 269.5)
XYZ	xyz(17.7557, 13.0548, 65.1894)
Luminance	0.1306 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F59D6 #D6BC3F

analogous

#3FA5D6 #3F59D6 #713FD6

triadic

#3F59D6 #D63F59 #59D63F

tetradic

#3F59D6 #D63FA5 #D6BC3F #3FD671

square

#3F59D6 #D63FA5 #D6BC3F #3FD671

split-complementary

#3F59D6 #D6713F #A5D63F

monochromatic

#1B2C7F #263EB2 #3F59D6 #7185E1 #A4B0EC

Accessibility & contrast

On white

5.81

#3F59D6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#3F59D6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F59D6

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F59D6	#FFFFFF	#000000	##FFFFFF
##3F59D6	1.00	5.81	3.61	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CDA

Deuteranopia (green-blind)

#005ED4

Tritanopia (blue-blind)

#00788F

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3f59d6;
/* rgb */ color: rgb(63, 89, 214);
/* oklch */ color: oklch(52.0% 0.194 269.5);

Tailwind

colors: {
  custom: {
    50: '#8787e4',
    500: '#3f59d6',
    950: '#000000',
  },
}

SCSS

$custom: #3f59d6;
$custom-light: #8787e4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f59d6",
  "rgb": {
    "r": 63,
    "g": 89,
    "b": 214
  },
  "hsl": {
    "h": 229.669,
    "s": 64.807,
    "l": 54.314
  },
  "oklch": {
    "l": 0.51967,
    "c": 0.19355,
    "h": 269.5
  },
  "luminance": 0.13057
}

Semantic roles & 50–950 ramp

primary

#3F59D6

secondary

#D8CD98

accent

#CB40E8

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #3F59D6

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

Preview Lab → · Contrast checker → · Palette generator →