#3F477F#3F477F

#3F477F is a dark, moderate blue. Relative luminance 0.071; OKLCH L 41.9% C 0.093 H 275.5°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#3F477F
RGB	rgb(63, 71, 127)
HSL	hsl(233, 34%, 37%)
HSV	hsv(233, 50%, 50%)
CMYK	cmyk(50.4%, 44.1%, 0%, 50.2%)
CIE-LAB	lab(32.02, 13.33, -32.78)
CIE-LCH	lch(32.02, 35.39, 292.13°)
OKLab	oklab(41.9% 0.0089 -0.0929)
OKLCH	oklch(41.9% 0.093 275.5)
XYZ	xyz(8.1327, 7.0951, 21.0155)
Luminance	0.0710 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F477F #7F773F

analogous

#3F677F #3F477F #573F7F

triadic

#3F477F #7F3F47 #477F3F

tetradic

#3F477F #7F3F67 #7F773F #3F7F57

square

#3F477F #7F3F67 #7F773F #3F7F57

split-complementary

#3F477F #7F573F #677F3F

monochromatic

#16192D #2B3056 #3F477F #535EA8 #7B83BD

Accessibility & contrast

On white

8.68

#3F477F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#3F477F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F477F

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F477F	#FFFFFF	#000000	##FFFFFF
##3F477F	1.00	8.68	2.42	8.68
#FFFFFF	8.68	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#314E81

Deuteranopia (green-blind)

#2B497E

Tritanopia (blue-blind)

#26535D

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f477f;
/* rgb */ color: rgb(63, 71, 127);
/* oklch */ color: oklch(41.9% 0.093 275.5);

Tailwind

colors: {
  custom: {
    50: '#787aa4',
    500: '#3f477f',
    950: '#000000',
  },
}

SCSS

$custom: #3f477f;
$custom-light: #787aa4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f477f",
  "rgb": {
    "r": 63,
    "g": 71,
    "b": 127
  },
  "hsl": {
    "h": 232.5,
    "s": 33.684,
    "l": 37.255
  },
  "oklch": {
    "l": 0.419,
    "c": 0.0933,
    "h": 275.5
  },
  "luminance": 0.07096
}

Semantic roles & 50–950 ramp

primary

#3F477F

secondary

#A8A172

accent

#BC5ECA

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#09090F

muted

#7B7B7F

Preview Lab

Preview with #3F477F

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

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