#3F487E#3F487E

#3F487E is a dark, moderate blue. Relative luminance 0.072; OKLCH L 42.1% C 0.090 H 274.7°. Best body text is #FFFFFF at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#3F487E
RGB	rgb(63, 72, 126)
HSL	hsl(231, 33%, 37%)
HSV	hsv(231, 50%, 49%)
CMYK	cmyk(50%, 42.9%, 0%, 50.6%)
CIE-LAB	lab(32.25, 12.34, -31.80)
CIE-LCH	lch(32.25, 34.11, 291.21°)
OKLab	oklab(42.06% 0.0074 -0.09)
OKLCH	oklch(42.06% 0.09 274.7)
XYZ	xyz(8.1320, 7.1974, 20.6954)
Luminance	0.0720 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F487E #7E753F

analogous

#3F677E #3F487E #563F7E

triadic

#3F487E #7E3F48 #487E3F

tetradic

#3F487E #7E3F67 #7E753F #3F7E56

square

#3F487E #7E3F67 #7E753F #3F7E56

split-complementary

#3F487E #7E563F #677E3F

monochromatic

#16192C #2B3155 #3F487E #535FA7 #7B84BD

Accessibility & contrast

On white

8.61

#3F487E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#3F487E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F487E

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F487E	#FFFFFF	#000000	##FFFFFF
##3F487E	1.00	8.61	2.44	8.61
#FFFFFF	8.61	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#334F80

Deuteranopia (green-blind)

#2D497D

Tritanopia (blue-blind)

#27535D

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3f487e;
/* rgb */ color: rgb(63, 72, 126);
/* oklch */ color: oklch(42.1% 0.090 274.7);

Tailwind

colors: {
  custom: {
    50: '#787aa4',
    500: '#3f487e',
    950: '#000000',
  },
}

SCSS

$custom: #3f487e;
$custom-light: #787aa4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f487e",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 126
  },
  "hsl": {
    "h": 231.429,
    "s": 33.333,
    "l": 37.059
  },
  "oklch": {
    "l": 0.42056,
    "c": 0.09028,
    "h": 274.7
  },
  "luminance": 0.07198
}

Semantic roles & 50–950 ramp

primary

#3F487E

secondary

#A7A072

accent

#BA5EC9

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#09090F

muted

#7B7B7F

Preview Lab

Preview with #3F487E

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

Preview Lab → · Contrast checker → · Palette generator →