#3F4E9E#3F4E9E

#3F4E9E is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.5% C 0.130 H 272.2°. Best body text is #FFFFFF at 7.51:1 contrast (WCAG AA passes).

Color values

HEX	#3F4E9E
RGB	rgb(63, 78, 158)
HSL	hsl(231, 43%, 43%)
HSV	hsv(231, 60%, 62%)
CMYK	cmyk(60.1%, 50.6%, 0%, 38%)
CIE-LAB	lab(35.93, 19.40, -45.47)
CIE-LCH	lch(35.93, 49.44, 293.10°)
OKLab	oklab(45.5% 0.0051 -0.1301)
OKLCH	oklch(45.5% 0.13 272.2)
XYZ	xyz(10.9438, 8.9733, 33.4964)
Luminance	0.0897 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4E9E #9E8F3F

analogous

#3F7D9E #3F4E9E #5F3F9E

triadic

#3F4E9E #9E3F4E #4E9E3F

tetradic

#3F4E9E #9E3F7D #9E8F3F #3F9E5F

square

#3F4E9E #9E3F7D #9E8F3F #3F9E5F

split-complementary

#3F4E9E #9E5F3F #7D9E3F

monochromatic

#1C2346 #2E3872 #3F4E9E #5C6CBE #8893D0

Accessibility & contrast

On white

7.51

#3F4E9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#3F4E9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4E9E

7.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4E9E	#FFFFFF	#000000	##FFFFFF
##3F4E9E	1.00	7.51	2.79	7.51
#FFFFFF	7.51	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2459A1

Deuteranopia (green-blind)

#12519C

Tritanopia (blue-blind)

#00606E

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3f4e9e;
/* rgb */ color: rgb(63, 78, 158);
/* oklch */ color: oklch(45.5% 0.130 272.2);

Tailwind

colors: {
  custom: {
    50: '#7d7fbb',
    500: '#3f4e9e',
    950: '#000000',
  },
}

SCSS

$custom: #3f4e9e;
$custom-light: #7d7fbb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4e9e",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 158
  },
  "hsl": {
    "h": 230.526,
    "s": 42.986,
    "l": 43.333
  },
  "oklch": {
    "l": 0.45502,
    "c": 0.13016,
    "h": 272.2
  },
  "luminance": 0.08974
}

Semantic roles & 50–950 ramp

primary

#3F4E9E

secondary

#BAB17F

accent

#BF55D3

background

#F8F7FB

surface

#EFEEF6

border

#CAC9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #3F4E9E

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

Preview Lab → · Contrast checker → · Palette generator →