#3F487C#3F487C

#3F487C is a dark, moderate blue. Relative luminance 0.071; OKLCH L 41.9% C 0.087 H 274.6°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#3F487C
RGB	rgb(63, 72, 124)
HSL	hsl(231, 33%, 37%)
HSV	hsv(231, 49%, 49%)
CMYK	cmyk(49.2%, 41.9%, 0%, 51.4%)
CIE-LAB	lab(32.14, 11.67, -30.74)
CIE-LCH	lch(32.14, 32.88, 290.79°)
OKLab	oklab(41.93% 0.007 -0.0869)
OKLCH	oklch(41.93% 0.087 274.6)
XYZ	xyz(8.0042, 7.1463, 20.0225)
Luminance	0.0715 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F487C #7C733F

analogous

#3F677C #3F487C #553F7C

triadic

#3F487C #7C3F48 #487C3F

tetradic

#3F487C #7C3F67 #7C733F #3F7C55

square

#3F487C #7C3F67 #7C733F #3F7C55

split-complementary

#3F487C #7C553F #677C3F

monochromatic

#16192B #2A3053 #3F487C #5460A5 #7A84BB

Accessibility & contrast

On white

8.64

#3F487C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#3F487C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F487C

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F487C	#FFFFFF	#000000	##FFFFFF
##3F487C	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#344E7E

Deuteranopia (green-blind)

#2F497B

Tritanopia (blue-blind)

#28535C

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3f487c;
/* rgb */ color: rgb(63, 72, 124);
/* oklch */ color: oklch(41.9% 0.087 274.6);

Tailwind

colors: {
  custom: {
    50: '#787aa2',
    500: '#3f487c',
    950: '#000000',
  },
}

SCSS

$custom: #3f487c;
$custom-light: #787aa2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f487c",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 124
  },
  "hsl": {
    "h": 231.148,
    "s": 32.62,
    "l": 36.667
  },
  "oklch": {
    "l": 0.41931,
    "c": 0.08715,
    "h": 274.6
  },
  "luminance": 0.07147
}

Semantic roles & 50–950 ramp

primary

#3F487C

secondary

#A69E71

accent

#B95FC9

background

#F7F7FA

surface

#EDEDF3

border

#C8C8CD

text

#09090F

muted

#7B7B7F

Preview Lab

Preview with #3F487C

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

Preview Lab → · Contrast checker → · Palette generator →