#3F59D4#3F59D4

#3F59D4 is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.8% C 0.191 H 269.5°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#3F59D4
RGB	rgb(63, 89, 212)
HSL	hsl(230, 63%, 54%)
HSV	hsv(230, 70%, 83%)
CMYK	cmyk(70.3%, 58%, 0%, 16.9%)
CIE-LAB	lab(42.69, 31.47, -66.21)
CIE-LCH	lch(42.69, 73.31, 295.42°)
OKLab	oklab(51.81% -0.0018 -0.1909)
OKLCH	oklch(51.81% 0.191 269.5)
XYZ	xyz(17.5019, 12.9532, 63.8524)
Luminance	0.1295 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F59D4 #D4BA3F

analogous

#3FA4D4 #3F59D4 #703FD4

triadic

#3F59D4 #D43F59 #59D43F

tetradic

#3F59D4 #D43FA4 #D4BA3F #3FD470

square

#3F59D4 #D43FA4 #D4BA3F #3FD470

split-complementary

#3F59D4 #D4703F #A4D43F

monochromatic

#1C2D7D #273FAF #3F59D4 #7184DF #A3AFEA

Accessibility & contrast

On white

5.85

#3F59D4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#3F59D4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F59D4

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F59D4	#FFFFFF	#000000	##FFFFFF
##3F59D4	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CD8

Deuteranopia (green-blind)

#005ED2

Tritanopia (blue-blind)

#00788E

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3f59d4;
/* rgb */ color: rgb(63, 89, 212);
/* oklch */ color: oklch(51.8% 0.191 269.5);

Tailwind

colors: {
  custom: {
    50: '#8787e2',
    500: '#3f59d4',
    950: '#000000',
  },
}

SCSS

$custom: #3f59d4;
$custom-light: #8787e2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f59d4",
  "rgb": {
    "r": 63,
    "g": 89,
    "b": 212
  },
  "hsl": {
    "h": 229.53,
    "s": 63.404,
    "l": 53.922
  },
  "oklch": {
    "l": 0.51805,
    "c": 0.19092,
    "h": 269.5
  },
  "luminance": 0.12955
}

Semantic roles & 50–950 ramp

primary

#3F59D4

secondary

#D7CC98

accent

#CA41E6

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0B15

muted

#7E7C84

Preview Lab

Preview with #3F59D4

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

Preview Lab → · Contrast checker → · Palette generator →