#3F477C#3F477C

#3F477C is a dark, moderate blue. Relative luminance 0.070; OKLCH L 41.7% C 0.089 H 275.4°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#3F477C
RGB	rgb(63, 71, 124)
HSL	hsl(232, 33%, 37%)
HSV	hsv(232, 49%, 49%)
CMYK	cmyk(49.2%, 42.7%, 0%, 51.4%)
CIE-LAB	lab(31.85, 12.33, -31.20)
CIE-LCH	lch(31.85, 33.54, 291.57°)
OKLab	oklab(41.71% 0.0083 -0.0882)
OKLCH	oklch(41.71% 0.089 275.4)
XYZ	xyz(7.9401, 7.0180, 20.0011)
Luminance	0.0702 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F477C #7C743F

analogous

#3F667C #3F477C #563F7C

triadic

#3F477C #7C3F47 #477C3F

tetradic

#3F477C #7C3F66 #7C743F #3F7C56

square

#3F477C #7C3F66 #7C743F #3F7C56

split-complementary

#3F477C #7C563F #667C3F

monochromatic

#16192B #2A3053 #3F477C #545EA5 #7A83BB

Accessibility & contrast

On white

8.74

#3F477C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#3F477C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F477C

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F477C	#FFFFFF	#000000	##FFFFFF
##3F477C	1.00	8.74	2.40	8.74
#FFFFFF	8.74	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#334E7E

Deuteranopia (green-blind)

#2D497B

Tritanopia (blue-blind)

#28525B

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f477c;
/* rgb */ color: rgb(63, 71, 124);
/* oklch */ color: oklch(41.7% 0.089 275.4);

Tailwind

colors: {
  custom: {
    50: '#787aa2',
    500: '#3f477c',
    950: '#000000',
  },
}

SCSS

$custom: #3f477c;
$custom-light: #787aa2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f477c",
  "rgb": {
    "r": 63,
    "g": 71,
    "b": 124
  },
  "hsl": {
    "h": 232.131,
    "s": 32.62,
    "l": 36.667
  },
  "oklch": {
    "l": 0.41709,
    "c": 0.08861,
    "h": 275.4
  },
  "luminance": 0.07018
}

Semantic roles & 50–950 ramp

primary

#3F477C

secondary

#A69F71

accent

#BB5FC9

background

#F7F7FA

surface

#EDEDF3

border

#C8C8CD

text

#09090F

muted

#7B7B7F

Preview Lab

Preview with #3F477C

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

Preview Lab → · Contrast checker → · Palette generator →