#3F4E8E#3F4E8E

#3F4E8E is a dark, moderate blue. Relative luminance 0.085; OKLCH L 44.4% C 0.106 H 271.5°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#3F4E8E
RGB	rgb(63, 78, 142)
HSL	hsl(229, 39%, 40%)
HSV	hsv(229, 56%, 56%)
CMYK	cmyk(55.6%, 45.1%, 0%, 44.3%)
CIE-LAB	lab(34.92, 13.82, -37.41)
CIE-LCH	lch(34.92, 39.88, 290.28°)
OKLab	oklab(44.4% 0.0029 -0.1064)
OKLCH	oklch(44.4% 0.106 271.5)
XYZ	xyz(9.6552, 8.4579, 26.7097)
Luminance	0.0846 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4E8E #8E7F3F

analogous

#3F758E #3F4E8E #583F8E

triadic

#3F4E8E #8E3F4E #4E8E3F

tetradic

#3F4E8E #8E3F75 #8E7F3F #3F8E58

square

#3F4E8E #8E3F75 #8E7F3F #3F8E58

split-complementary

#3F4E8E #8E583F #758E3F

monochromatic

#191F39 #2C3764 #3F4E8E #5668B4 #818EC7

Accessibility & contrast

On white

7.80

#3F4E8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#3F4E8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4E8E

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4E8E	#FFFFFF	#000000	##FFFFFF
##3F4E8E	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#325690

Deuteranopia (green-blind)

#294F8D

Tritanopia (blue-blind)

#165C67

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3f4e8e;
/* rgb */ color: rgb(63, 78, 142);
/* oklch */ color: oklch(44.4% 0.106 271.5);

Tailwind

colors: {
  custom: {
    50: '#7a7faf',
    500: '#3f4e8e',
    950: '#000000',
  },
}

SCSS

$custom: #3f4e8e;
$custom-light: #7a7faf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4e8e",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 142
  },
  "hsl": {
    "h": 228.608,
    "s": 38.537,
    "l": 40.196
  },
  "oklch": {
    "l": 0.44403,
    "c": 0.1064,
    "h": 271.5
  },
  "luminance": 0.08459
}

Semantic roles & 50–950 ramp

primary

#3F4E8E

secondary

#B1A678

accent

#B859CE

background

#F7F7FA

surface

#EEEEF4

border

#C9C9CE

text

#0A0A10

muted

#7C7C7F

Preview Lab

Preview with #3F4E8E

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

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