#3F4E7B#3F4E7B

#3F4E7B is a dark, moderate blue. Relative luminance 0.079; OKLCH L 43.2% C 0.077 H 269.0°. Best body text is #FFFFFF at 8.12:1 contrast (WCAG AA passes).

Color values

HEX	#3F4E7B
RGB	rgb(63, 78, 123)
HSL	hsl(225, 32%, 36%)
HSV	hsv(225, 49%, 48%)
CMYK	cmyk(48.8%, 36.6%, 0%, 51.8%)
CIE-LAB	lab(33.85, 7.40, -27.42)
CIE-LCH	lch(33.85, 28.40, 285.10°)
OKLab	oklab(43.23% -0.0013 -0.0772)
OKLCH	oklch(43.23% 0.077 269)
XYZ	xyz(8.3483, 7.9351, 19.8268)
Luminance	0.0794 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4E7B #7B6C3F

analogous

#3F6C7B #3F4E7B #4E3F7B

triadic

#3F4E7B #7B3F4E #4E7B3F

tetradic

#3F4E7B #7B3F6C #7B6C3F #3F7B4E

square

#3F4E7B #7B3F6C #7B6C3F #3F7B4E

split-complementary

#3F4E7B #7B4E3F #6C7B3F

monochromatic

#161B2A #2A3453 #3F4E7B #5468A3 #7A8ABB

Accessibility & contrast

On white

8.12

#3F4E7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#3F4E7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4E7B

8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4E7B	#FFFFFF	#000000	##FFFFFF
##3F4E7B	1.00	8.12	2.59	8.12
#FFFFFF	8.12	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D527D

Deuteranopia (green-blind)

#374D7A

Tritanopia (blue-blind)

#28575E

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3f4e7b;
/* rgb */ color: rgb(63, 78, 123);
/* oklch */ color: oklch(43.2% 0.077 269.0);

Tailwind

colors: {
  custom: {
    50: '#777fa1',
    500: '#3f4e7b',
    950: '#000000',
  },
}

SCSS

$custom: #3f4e7b;
$custom-light: #777fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4e7b",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 123
  },
  "hsl": {
    "h": 225,
    "s": 32.258,
    "l": 36.471
  },
  "oklch": {
    "l": 0.4323,
    "c": 0.07717,
    "h": 269
  },
  "luminance": 0.07936
}

Semantic roles & 50–950 ramp

primary

#3F4E7B

secondary

#A59871

accent

#AE5FC8

background

#F7F7F9

surface

#EDEEF2

border

#C8C9CC

text

#090A0F

muted

#7B7C7E

Preview Lab

Preview with #3F4E7B

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

Preview Lab → · Contrast checker → · Palette generator →