#3F4E9A#3F4E9A

#3F4E9A is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.2% C 0.124 H 272.1°. Best body text is #FFFFFF at 7.59:1 contrast (WCAG AA passes).

Color values

HEX	#3F4E9A
RGB	rgb(63, 78, 154)
HSL	hsl(230, 42%, 43%)
HSV	hsv(230, 59%, 60%)
CMYK	cmyk(59.1%, 49.4%, 0%, 39.6%)
CIE-LAB	lab(35.67, 17.99, -43.49)
CIE-LCH	lch(35.67, 47.06, 292.48°)
OKLab	oklab(45.22% 0.0046 -0.1242)
OKLCH	oklch(45.22% 0.124 272.1)
XYZ	xyz(10.6051, 8.8378, 31.7126)
Luminance	0.0884 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4E9A #9A8B3F

analogous

#3F7B9A #3F4E9A #5E3F9A

triadic

#3F4E9A #9A3F4E #4E9A3F

tetradic

#3F4E9A #9A3F7B #9A8B3F #3F9A5E

square

#3F4E9A #9A3F7B #9A8B3F #3F9A5E

split-complementary

#3F4E9A #9A5E3F #7B9A3F

monochromatic

#1B2243 #2D386F #3F4E9A #5A6BBC #8692CD

Accessibility & contrast

On white

7.59

#3F4E9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#3F4E9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4E9A

7.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4E9A	#FFFFFF	#000000	##FFFFFF
##3F4E9A	1.00	7.59	2.77	7.59
#FFFFFF	7.59	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28589D

Deuteranopia (green-blind)

#1A5098

Tritanopia (blue-blind)

#005F6C

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3f4e9a;
/* rgb */ color: rgb(63, 78, 154);
/* oklch */ color: oklch(45.2% 0.124 272.1);

Tailwind

colors: {
  custom: {
    50: '#7c7fb8',
    500: '#3f4e9a',
    950: '#000000',
  },
}

SCSS

$custom: #3f4e9a;
$custom-light: #7c7fb8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4e9a",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 154
  },
  "hsl": {
    "h": 230.11,
    "s": 41.935,
    "l": 42.549
  },
  "oklch": {
    "l": 0.45218,
    "c": 0.1243,
    "h": 272.1
  },
  "luminance": 0.08839
}

Semantic roles & 50–950 ramp

primary

#3F4E9A

secondary

#B8AE7D

accent

#BD56D2

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#0A0A11

muted

#7C7C80

Preview Lab

Preview with #3F4E9A

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

Preview Lab → · Contrast checker → · Palette generator →