#3F457A#3F457A

#3F457A is a dark, moderate blue. Relative luminance 0.067; OKLCH L 41.1% C 0.088 H 276.9°. Best body text is #FFFFFF at 8.96:1 contrast (WCAG AA passes).

Color values

HEX	#3F457A
RGB	rgb(63, 69, 122)
HSL	hsl(234, 32%, 36%)
HSV	hsv(234, 48%, 48%)
CMYK	cmyk(48.4%, 43.4%, 0%, 52.2%)
CIE-LAB	lab(31.16, 13.00, -31.04)
CIE-LCH	lch(31.16, 33.66, 292.72°)
OKLab	oklab(41.14% 0.0106 -0.0878)
OKLCH	oklch(41.14% 0.088 276.9)
XYZ	xyz(7.6898, 6.7177, 19.3000)
Luminance	0.0672 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F457A #7A743F

analogous

#3F637A #3F457A #573F7A

triadic

#3F457A #7A3F45 #457A3F

tetradic

#3F457A #7A3F63 #7A743F #3F7A57

square

#3F457A #7A3F63 #7A743F #3F7A57

split-complementary

#3F457A #7A573F #637A3F

monochromatic

#151729 #2A2E52 #3F457A #545CA2 #7980BA

Accessibility & contrast

On white

8.96

#3F457A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#3F457A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F457A

8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F457A	#FFFFFF	#000000	##FFFFFF
##3F457A	1.00	8.96	2.34	8.96
#FFFFFF	8.96	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#314C7C

Deuteranopia (green-blind)

#2C4779

Tritanopia (blue-blind)

#2A5059

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3f457a;
/* rgb */ color: rgb(63, 69, 122);
/* oklch */ color: oklch(41.1% 0.088 276.9);

Tailwind

colors: {
  custom: {
    50: '#7878a1',
    500: '#3f457a',
    950: '#000000',
  },
}

SCSS

$custom: #3f457a;
$custom-light: #7878a1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f457a",
  "rgb": {
    "r": 63,
    "g": 69,
    "b": 122
  },
  "hsl": {
    "h": 233.898,
    "s": 31.892,
    "l": 36.275
  },
  "oklch": {
    "l": 0.41142,
    "c": 0.08843,
    "h": 276.9
  },
  "luminance": 0.06718
}

Semantic roles & 50–950 ramp

primary

#3F457A

secondary

#A49F70

accent

#BD60C8

background

#F7F7F9

surface

#EDEDF2

border

#C8C8CC

text

#09090F

muted

#7B7B7E

Preview Lab

Preview with #3F457A

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

Preview Lab → · Contrast checker → · Palette generator →