#3F59CD#3F59CD

#3F59CD is a mid, vivid blue. Relative luminance 0.126; OKLCH L 51.2% C 0.182 H 269.4°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#3F59CD
RGB	rgb(63, 89, 205)
HSL	hsl(229, 59%, 53%)
HSV	hsv(229, 69%, 80%)
CMYK	cmyk(69.3%, 56.6%, 0%, 19.6%)
CIE-LAB	lab(42.17, 28.98, -63.04)
CIE-LCH	lch(42.17, 69.39, 294.69°)
OKLab	oklab(51.25% -0.002 -0.1816)
OKLCH	oklch(51.25% 0.182 269.4)
XYZ	xyz(16.6379, 12.6077, 59.3025)
Luminance	0.1261 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F59CD #CDB33F

analogous

#3FA0CD #3F59CD #6C3FCD

triadic

#3F59CD #CD3F59 #59CD3F

tetradic

#3F59CD #CD3FA0 #CDB33F #3FCD6C

square

#3F59CD #CD3FA0 #CDB33F #3FCD6C

split-complementary

#3F59CD #CD6C3F #A0CD3F

monochromatic

#1E2E74 #2B41A4 #3F59CD #7083DA #A0ADE6

Accessibility & contrast

On white

5.96

#3F59CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#3F59CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F59CD

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F59CD	#FFFFFF	#000000	##FFFFFF
##3F59CD	1.00	5.96	3.52	5.96
#FFFFFF	5.96	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AD1

Deuteranopia (green-blind)

#005DCB

Tritanopia (blue-blind)

#00758A

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3f59cd;
/* rgb */ color: rgb(63, 89, 205);
/* oklch */ color: oklch(51.2% 0.182 269.4);

Tailwind

colors: {
  custom: {
    50: '#8587dd',
    500: '#3f59cd',
    950: '#000000',
  },
}

SCSS

$custom: #3f59cd;
$custom-light: #8587dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f59cd",
  "rgb": {
    "r": 63,
    "g": 89,
    "b": 205
  },
  "hsl": {
    "h": 229.014,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.51246,
    "c": 0.18161,
    "h": 269.4
  },
  "luminance": 0.12609
}

Semantic roles & 50–950 ramp

primary

#3F59CD

secondary

#D3C795

accent

#C546E2

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F59CD

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

Preview Lab → · Contrast checker → · Palette generator →