#3F569B#3F569B

#3F569B is a mid, moderate blue. Relative luminance 0.101; OKLCH L 47.0% C 0.115 H 267.9°. Best body text is #FFFFFF at 6.96:1 contrast (WCAG AA passes).

Color values

HEX	#3F569B
RGB	rgb(63, 86, 155)
HSL	hsl(225, 42%, 43%)
HSV	hsv(225, 59%, 61%)
CMYK	cmyk(59.4%, 44.5%, 0%, 39.2%)
CIE-LAB	lab(37.98, 13.12, -40.39)
CIE-LCH	lch(37.98, 42.47, 287.99°)
OKLab	oklab(47% -0.0042 -0.115)
OKLCH	oklch(47% 0.115 267.9)
XYZ	xyz(11.2921, 10.0780, 32.3542)
Luminance	0.1008 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F569B #9B843F

analogous

#3F849B #3F569B #563F9B

triadic

#3F569B #9B3F56 #569B3F

tetradic

#3F569B #9B3F84 #9B843F #3F9B56

square

#3F569B #9B3F84 #9B843F #3F9B56

split-complementary

#3F569B #9B563F #849B3F

monochromatic

#1C2644 #2D3E6F #3F569B #5B73BC #8698CE

Accessibility & contrast

On white

6.96

#3F569B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#3F569B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F569B

6.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F569B	#FFFFFF	#000000	##FFFFFF
##3F569B	1.00	6.96	3.02	6.96
#FFFFFF	6.96	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#375E9E

Deuteranopia (green-blind)

#2A569A

Tritanopia (blue-blind)

#006571

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f569b;
/* rgb */ color: rgb(63, 86, 155);
/* oklch */ color: oklch(47.0% 0.115 267.9);

Tailwind

colors: {
  custom: {
    50: '#7c85b9',
    500: '#3f569b',
    950: '#000000',
  },
}

SCSS

$custom: #3f569b;
$custom-light: #7c85b9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f569b",
  "rgb": {
    "r": 63,
    "g": 86,
    "b": 155
  },
  "hsl": {
    "h": 225,
    "s": 42.202,
    "l": 42.745
  },
  "oklch": {
    "l": 0.47002,
    "c": 0.11509,
    "h": 267.9
  },
  "luminance": 0.10079
}

Semantic roles & 50–950 ramp

primary

#3F569B

secondary

#B8AA7D

accent

#B356D2

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#0A0B11

muted

#7C7C80

Preview Lab

Preview with #3F569B

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

Preview Lab → · Contrast checker → · Palette generator →