#3F59A6#3F59A6

#3F59A6 is a mid, vivid blue. Relative luminance 0.110; OKLCH L 48.4% C 0.127 H 267.5°. Best body text is #FFFFFF at 6.58:1 contrast (WCAG AA passes).

Color values

HEX	#3F59A6
RGB	rgb(63, 89, 166)
HSL	hsl(225, 45%, 45%)
HSV	hsv(225, 62%, 65%)
CMYK	cmyk(62%, 46.4%, 0%, 34.9%)
CIE-LAB	lab(39.50, 15.06, -44.53)
CIE-LCH	lch(39.50, 47.00, 288.68°)
OKLab	oklab(48.38% -0.0056 -0.1271)
OKLCH	oklch(48.38% 0.127 267.5)
XYZ	xyz(12.5029, 10.9536, 37.5244)
Luminance	0.1095 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F59A6 #A68C3F

analogous

#3F8DA6 #3F59A6 #583FA6

triadic

#3F59A6 #A63F59 #59A63F

tetradic

#3F59A6 #A63F8D #A68C3F #3FA658

square

#3F59A6 #A63F8D #A68C3F #3FA658

split-complementary

#3F59A6 #A6583F #8DA63F

monochromatic

#1D294D #2E417A #3F59A6 #6079C3 #8C9ED3

Accessibility & contrast

On white

6.58

#3F59A6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#3F59A6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F59A6

6.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F59A6	#FFFFFF	#000000	##FFFFFF
##3F59A6	1.00	6.58	3.19	6.58
#FFFFFF	6.58	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3462A9

Deuteranopia (green-blind)

#2459A4

Tritanopia (blue-blind)

#006A77

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3f59a6;
/* rgb */ color: rgb(63, 89, 166);
/* oklch */ color: oklch(48.4% 0.127 267.5);

Tailwind

colors: {
  custom: {
    50: '#7e87c1',
    500: '#3f59a6',
    950: '#000000',
  },
}

SCSS

$custom: #3f59a6;
$custom-light: #7e87c1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f59a6",
  "rgb": {
    "r": 63,
    "g": 89,
    "b": 166
  },
  "hsl": {
    "h": 224.854,
    "s": 44.978,
    "l": 44.902
  },
  "oklch": {
    "l": 0.48383,
    "c": 0.12726,
    "h": 267.5
  },
  "luminance": 0.10955
}

Semantic roles & 50–950 ramp

primary

#3F59A6

secondary

#BEAF83

accent

#B453D5

background

#F8F8FB

surface

#EFEFF7

border

#CACAD0

text

#0B0B12

muted

#7C7C81

Preview Lab

Preview with #3F59A6

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

Preview Lab → · Contrast checker → · Palette generator →