#3F59CA#3F59CA

#3F59CA is a mid, vivid blue. Relative luminance 0.125; OKLCH L 51.0% C 0.178 H 269.3°. Best body text is #FFFFFF at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#3F59CA
RGB	rgb(63, 89, 202)
HSL	hsl(229, 57%, 52%)
HSV	hsv(229, 69%, 79%)
CMYK	cmyk(68.8%, 55.9%, 0%, 20.8%)
CIE-LAB	lab(41.94, 27.91, -61.67)
CIE-LCH	lch(41.94, 67.70, 294.35°)
OKLab	oklab(51.01% -0.0021 -0.1776)
OKLCH	oklch(51.01% 0.178 269.3)
XYZ	xyz(16.2793, 12.4642, 57.4136)
Luminance	0.1247 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F59CA #CAB03F

analogous

#3F9FCA #3F59CA #6B3FCA

triadic

#3F59CA #CA3F59 #59CA3F

tetradic

#3F59CA #CA3F9F #CAB03F #3FCA6B

square

#3F59CA #CA3F9F #CAB03F #3FCA6B

split-complementary

#3F59CA #CA6B3F #9FCA3F

monochromatic

#1F2E70 #2C42A0 #3F59CA #6F82D7 #9FACE4

Accessibility & contrast

On white

6.01

#3F59CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#3F59CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F59CA

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F59CA	#FFFFFF	#000000	##FFFFFF
##3F59CA	1.00	6.01	3.49	6.01
#FFFFFF	6.01	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ACE

Deuteranopia (green-blind)

#005DC8

Tritanopia (blue-blind)

#007589

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3f59ca;
/* rgb */ color: rgb(63, 89, 202);
/* oklch */ color: oklch(51.0% 0.178 269.3);

Tailwind

colors: {
  custom: {
    50: '#8587db',
    500: '#3f59ca',
    950: '#000000',
  },
}

SCSS

$custom: #3f59ca;
$custom-light: #8587db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f59ca",
  "rgb": {
    "r": 63,
    "g": 89,
    "b": 202
  },
  "hsl": {
    "h": 228.777,
    "s": 56.735,
    "l": 51.961
  },
  "oklch": {
    "l": 0.51011,
    "c": 0.17758,
    "h": 269.3
  },
  "luminance": 0.12466
}

Semantic roles & 50–950 ramp

primary

#3F59CA

secondary

#D1C594

accent

#C448E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F59CA

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

Preview Lab → · Contrast checker → · Palette generator →