#3F498D#3F498D

#3F498D is a dark, moderate blue. Relative luminance 0.077; OKLCH L 43.3% C 0.112 H 274.5°. Best body text is #FFFFFF at 8.24:1 contrast (WCAG AA passes).

Color values

HEX	#3F498D
RGB	rgb(63, 73, 141)
HSL	hsl(232, 38%, 40%)
HSV	hsv(232, 55%, 55%)
CMYK	cmyk(55.3%, 48.2%, 0%, 44.7%)
CIE-LAB	lab(33.44, 16.77, -39.15)
CIE-LCH	lch(33.44, 42.59, 293.19°)
OKLab	oklab(43.26% 0.0087 -0.1115)
OKLCH	oklch(43.26% 0.112 274.5)
XYZ	xyz(9.2386, 7.7443, 26.2021)
Luminance	0.0775 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F498D #8D833F

analogous

#3F708D #3F498D #5C3F8D

triadic

#3F498D #8D3F49 #498D3F

tetradic

#3F498D #8D3F70 #8D833F #3F8D5C

square

#3F498D #8D3F70 #8D833F #3F8D5C

split-complementary

#3F498D #8D5C3F #708D3F

monochromatic

#191D38 #2C3363 #3F498D #5662B3 #8089C6

Accessibility & contrast

On white

8.24

#3F498D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#3F498D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F498D

8.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F498D	#FFFFFF	#000000	##FFFFFF
##3F498D	1.00	8.24	2.55	8.24
#FFFFFF	8.24	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A5290

Deuteranopia (green-blind)

#214C8C

Tritanopia (blue-blind)

#195864

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3f498d;
/* rgb */ color: rgb(63, 73, 141);
/* oklch */ color: oklch(43.3% 0.112 274.5);

Tailwind

colors: {
  custom: {
    50: '#7a7baf',
    500: '#3f498d',
    950: '#000000',
  },
}

SCSS

$custom: #3f498d;
$custom-light: #7a7baf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f498d",
  "rgb": {
    "r": 63,
    "g": 73,
    "b": 141
  },
  "hsl": {
    "h": 232.308,
    "s": 38.235,
    "l": 40
  },
  "oklch": {
    "l": 0.4326,
    "c": 0.11186,
    "h": 274.5
  },
  "luminance": 0.07745
}

Semantic roles & 50–950 ramp

primary

#3F498D

secondary

#B1A977

accent

#BF5ACE

background

#F7F7FA

surface

#EEEDF4

border

#C9C8CE

text

#0A0910

muted

#7C7B7F

Preview Lab

Preview with #3F498D

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

Preview Lab → · Contrast checker → · Palette generator →