#3F5DBA#3F5DBA

#3F5DBA is a mid, vivid blue. Relative luminance 0.124; OKLCH L 50.6% C 0.151 H 267.4°. Best body text is #FFFFFF at 6.02:1 contrast (WCAG AA passes).

Color values

HEX	#3F5DBA
RGB	rgb(63, 93, 186)
HSL	hsl(225, 49%, 49%)
HSV	hsv(225, 66%, 73%)
CMYK	cmyk(66.1%, 50%, 0%, 27.1%)
CIE-LAB	lab(41.89, 19.61, -52.47)
CIE-LCH	lch(41.89, 56.02, 290.50°)
OKLab	oklab(50.62% -0.0069 -0.1504)
OKLCH	oklch(50.62% 0.151 267.4)
XYZ	xyz(14.8241, 12.4292, 48.0627)
Luminance	0.1243 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5DBA #BA9C3F

analogous

#3F9BBA #3F5DBA #5F3FBA

triadic

#3F5DBA #BA3F5D #5DBA3F

tetradic

#3F5DBA #BA3F9B #BA9C3F #3FBA5F

square

#3F5DBA #BA3F9B #BA9C3F #3FBA5F

split-complementary

#3F5DBA #BA5F3F #9BBA3F

monochromatic

#202F5F #30468C #3F5DBA #6A82CC #97A8DC

Accessibility & contrast

On white

6.02

#3F5DBA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#3F5DBA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5DBA

6.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5DBA	#FFFFFF	#000000	##FFFFFF
##3F5DBA	1.00	6.02	3.49	6.02
#FFFFFF	6.02	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2969BD

Deuteranopia (green-blind)

#025EB8

Tritanopia (blue-blind)

#007383

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3f5dba;
/* rgb */ color: rgb(63, 93, 186);
/* oklch */ color: oklch(50.6% 0.151 267.4);

Tailwind

colors: {
  custom: {
    50: '#818acf',
    500: '#3f5dba',
    950: '#000000',
  },
}

SCSS

$custom: #3f5dba;
$custom-light: #818acf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5dba",
  "rgb": {
    "r": 63,
    "g": 93,
    "b": 186
  },
  "hsl": {
    "h": 225.366,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.50615,
    "c": 0.1506,
    "h": 267.4
  },
  "luminance": 0.12431
}

Semantic roles & 50–950 ramp

primary

#3F5DBA

secondary

#C8B98D

accent

#B74FD9

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3F5DBA

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

Preview Lab → · Contrast checker → · Palette generator →