#3F5FC9#3F5FC9

#3F5FC9 is a mid, vivid blue. Relative luminance 0.135; OKLCH L 52.1% C 0.169 H 267.5°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#3F5FC9
RGB	rgb(63, 95, 201)
HSL	hsl(226, 56%, 52%)
HSV	hsv(226, 69%, 79%)
CMYK	cmyk(68.7%, 52.7%, 0%, 21.2%)
CIE-LAB	lab(43.44, 23.72, -58.67)
CIE-LCH	lch(43.44, 63.28, 292.01°)
OKLab	oklab(52.12% -0.0072 -0.1686)
OKLCH	oklch(52.12% 0.169 267.5)
XYZ	xyz(16.6811, 13.4566, 56.9653)
Luminance	0.1346 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5FC9 #C9A93F

analogous

#3FA4C9 #3F5FC9 #643FC9

triadic

#3F5FC9 #C93F5F #5FC93F

tetradic

#3F5FC9 #C93FA4 #C9A93F #3FC964

square

#3F5FC9 #C93FA4 #C9A93F #3FC964

split-complementary

#3F5FC9 #C9643F #A4C93F

monochromatic

#1F326F #2D479E #3F5FC9 #6F87D6 #9FAFE4

Accessibility & contrast

On white

5.69

#3F5FC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#3F5FC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5FC9

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5FC9	#FFFFFF	#000000	##FFFFFF
##3F5FC9	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#176DCD

Deuteranopia (green-blind)

#0061C7

Tritanopia (blue-blind)

#00788B

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3f5fc9;
/* rgb */ color: rgb(63, 95, 201);
/* oklch */ color: oklch(52.1% 0.169 267.5);

Tailwind

colors: {
  custom: {
    50: '#848bda',
    500: '#3f5fc9',
    950: '#000000',
  },
}

SCSS

$custom: #3f5fc9;
$custom-light: #848bda;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5fc9",
  "rgb": {
    "r": 63,
    "g": 95,
    "b": 201
  },
  "hsl": {
    "h": 226.087,
    "s": 56.098,
    "l": 51.765
  },
  "oklch": {
    "l": 0.52116,
    "c": 0.1688,
    "h": 267.5
  },
  "luminance": 0.13458
}

Semantic roles & 50–950 ramp

primary

#3F5FC9

secondary

#D0C294

accent

#BC48DF

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3F5FC9

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

Preview Lab → · Contrast checker → · Palette generator →