#3F5AC9#3F5AC9

#3F5AC9 is a mid, vivid blue. Relative luminance 0.126; OKLCH L 51.1% C 0.175 H 269.0°. Best body text is #FFFFFF at 5.97:1 contrast (WCAG AA passes).

Color values

HEX	#3F5AC9
RGB	rgb(63, 90, 201)
HSL	hsl(228, 56%, 52%)
HSV	hsv(228, 69%, 79%)
CMYK	cmyk(68.7%, 55.2%, 0%, 21.2%)
CIE-LAB	lab(42.13, 26.92, -60.79)
CIE-LCH	lch(42.13, 66.49, 293.88°)
OKLab	oklab(51.13% -0.003 -0.175)
OKLCH	oklch(51.13% 0.175 269)
XYZ	xyz(16.2451, 12.5845, 56.8200)
Luminance	0.1259 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5AC9 #C9AE3F

analogous

#3F9FC9 #3F5AC9 #693FC9

triadic

#3F5AC9 #C93F5A #5AC93F

tetradic

#3F5AC9 #C93F9F #C9AE3F #3FC969

square

#3F5AC9 #C93F9F #C9AE3F #3FC969

split-complementary

#3F5AC9 #C9693F #9FC93F

monochromatic

#1F2F6F #2D439E #3F5AC9 #6F83D6 #9FACE4

Accessibility & contrast

On white

5.97

#3F5AC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#3F5AC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5AC9

5.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5AC9	#FFFFFF	#000000	##FFFFFF
##3F5AC9	1.00	5.97	3.52	5.97
#FFFFFF	5.97	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ACD

Deuteranopia (green-blind)

#005DC7

Tritanopia (blue-blind)

#007589

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3f5ac9;
/* rgb */ color: rgb(63, 90, 201);
/* oklch */ color: oklch(51.1% 0.175 269.0);

Tailwind

colors: {
  custom: {
    50: '#8488da',
    500: '#3f5ac9',
    950: '#000000',
  },
}

SCSS

$custom: #3f5ac9;
$custom-light: #8488da;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5ac9",
  "rgb": {
    "r": 63,
    "g": 90,
    "b": 201
  },
  "hsl": {
    "h": 228.261,
    "s": 56.098,
    "l": 51.765
  },
  "oklch": {
    "l": 0.51127,
    "c": 0.175,
    "h": 269
  },
  "luminance": 0.12586
}

Semantic roles & 50–950 ramp

primary

#3F5AC9

secondary

#D0C494

accent

#C248DF

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F5AC9

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

Preview Lab → · Contrast checker → · Palette generator →