#3F59BA#3F59BA

#3F59BA is a mid, vivid blue. Relative luminance 0.117; OKLCH L 49.8% C 0.156 H 268.8°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#3F59BA
RGB	rgb(63, 89, 186)
HSL	hsl(227, 49%, 49%)
HSV	hsv(227, 66%, 73%)
CMYK	cmyk(66.1%, 52.2%, 0%, 27.1%)
CIE-LAB	lab(40.81, 22.19, -54.22)
CIE-LCH	lch(40.81, 58.58, 292.26°)
OKLab	oklab(49.8% -0.0031 -0.1556)
OKLCH	oklch(49.8% 0.156 268.8)
XYZ	xyz(14.4822, 11.7453, 47.9487)
Luminance	0.1175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F59BA #BAA03F

analogous

#3F97BA #3F59BA #633FBA

triadic

#3F59BA #BA3F59 #59BA3F

tetradic

#3F59BA #BA3F97 #BAA03F #3FBA63

square

#3F59BA #BA3F97 #BAA03F #3FBA63

split-complementary

#3F59BA #BA633F #97BA3F

monochromatic

#202D5F #30438C #3F59BA #6A7FCC #97A6DC

Accessibility & contrast

On white

6.27

#3F59BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#3F59BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F59BA

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F59BA	#FFFFFF	#000000	##FFFFFF
##3F59BA	1.00	6.27	3.35	6.27
#FFFFFF	6.27	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D66BD

Deuteranopia (green-blind)

#005BB8

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3f59ba;
/* rgb */ color: rgb(63, 89, 186);
/* oklch */ color: oklch(49.8% 0.156 268.8);

Tailwind

colors: {
  custom: {
    50: '#8187cf',
    500: '#3f59ba',
    950: '#000000',
  },
}

SCSS

$custom: #3f59ba;
$custom-light: #8187cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f59ba",
  "rgb": {
    "r": 63,
    "g": 89,
    "b": 186
  },
  "hsl": {
    "h": 227.317,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.49795,
    "c": 0.15566,
    "h": 268.8
  },
  "luminance": 0.11747
}

Semantic roles & 50–950 ramp

primary

#3F59BA

secondary

#C8BB8D

accent

#BC4FD9

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3F59BA

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

Preview Lab → · Contrast checker → · Palette generator →