#3F4FA0#3F4FA0

#3F4FA0 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 45.9% C 0.132 H 271.9°. Best body text is #FFFFFF at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FA0
RGB	rgb(63, 79, 160)
HSL	hsl(230, 43%, 44%)
HSV	hsv(230, 61%, 63%)
CMYK	cmyk(60.6%, 50.6%, 0%, 37.3%)
CIE-LAB	lab(36.34, 19.45, -46.02)
CIE-LCH	lch(36.34, 49.96, 292.91°)
OKLab	oklab(45.85% 0.0043 -0.1316)
OKLCH	oklch(45.85% 0.132 271.9)
XYZ	xyz(11.1889, 9.1859, 34.4343)
Luminance	0.0919 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FA0 #A0903F

analogous

#3F7FA0 #3F4FA0 #5F3FA0

triadic

#3F4FA0 #A03F4F #4FA03F

tetradic

#3F4FA0 #A03F7F #A0903F #3FA05F

square

#3F4FA0 #A03F7F #A0903F #3FA05F

split-complementary

#3F4FA0 #A05F3F #7FA03F

monochromatic

#1C2448 #2E3974 #3F4FA0 #5D6DBF #8995D0

Accessibility & contrast

On white

7.40

#3F4FA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#3F4FA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4FA0

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FA0	#FFFFFF	#000000	##FFFFFF
##3F4FA0	1.00	7.40	2.84	7.40
#FFFFFF	7.40	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#245AA3

Deuteranopia (green-blind)

#11519E

Tritanopia (blue-blind)

#006170

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3f4fa0;
/* rgb */ color: rgb(63, 79, 160);
/* oklch */ color: oklch(45.9% 0.132 271.9);

Tailwind

colors: {
  custom: {
    50: '#7d80bd',
    500: '#3f4fa0',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fa0;
$custom-light: #7d80bd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fa0",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 160
  },
  "hsl": {
    "h": 230.103,
    "s": 43.498,
    "l": 43.725
  },
  "oklch": {
    "l": 0.45852,
    "c": 0.13172,
    "h": 271.9
  },
  "luminance": 0.09187
}

Semantic roles & 50–950 ramp

primary

#3F4FA0

secondary

#BBB180

accent

#BE55D3

background

#F8F7FB

surface

#EFEEF6

border

#CAC9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #3F4FA0

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

Preview Lab → · Contrast checker → · Palette generator →