#3F5CB7#3F5CB7

#3F5CB7 is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.2% C 0.148 H 267.6°. Best body text is #FFFFFF at 6.13:1 contrast (WCAG AA passes).

Color values

HEX	#3F5CB7
RGB	rgb(63, 92, 183)
HSL	hsl(226, 49%, 48%)
HSV	hsv(226, 66%, 72%)
CMYK	cmyk(65.6%, 49.7%, 0%, 28.2%)
CIE-LAB	lab(41.42, 19.18, -51.47)
CIE-LCH	lch(41.42, 54.93, 290.44°)
OKLab	oklab(50.19% -0.0063 -0.1475)
OKLCH	oklch(50.19% 0.148 267.6)
XYZ	xyz(14.4214, 12.1286, 46.3716)
Luminance	0.1213 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5CB7 #B79A3F

analogous

#3F98B7 #3F5CB7 #5E3FB7

triadic

#3F5CB7 #B73F5C #5CB73F

tetradic

#3F5CB7 #B73F98 #B79A3F #3FB75E

square

#3F5CB7 #B73F98 #B79A3F #3FB75E

split-complementary

#3F5CB7 #B75E3F #98B73F

monochromatic

#202E5C #2F4589 #3F5CB7 #6880CB #96A6DB

Accessibility & contrast

On white

6.13

#3F5CB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#3F5CB7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5CB7

6.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5CB7	#FFFFFF	#000000	##FFFFFF
##3F5CB7	1.00	6.13	3.43	6.13
#FFFFFF	6.13	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A67BA

Deuteranopia (green-blind)

#085DB5

Tritanopia (blue-blind)

#007181

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3f5cb7;
/* rgb */ color: rgb(63, 92, 183);
/* oklch */ color: oklch(50.2% 0.148 267.6);

Tailwind

colors: {
  custom: {
    50: '#8189cd',
    500: '#3f5cb7',
    950: '#000000',
  },
}

SCSS

$custom: #3f5cb7;
$custom-light: #8189cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5cb7",
  "rgb": {
    "r": 63,
    "g": 92,
    "b": 183
  },
  "hsl": {
    "h": 225.5,
    "s": 48.78,
    "l": 48.235
  },
  "oklch": {
    "l": 0.50194,
    "c": 0.14765,
    "h": 267.6
  },
  "luminance": 0.1213
}

Semantic roles & 50–950 ramp

primary

#3F5CB7

secondary

#C6B88B

accent

#B74FD8

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3F5CB7

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

Preview Lab → · Contrast checker → · Palette generator →