#3F659E#3F659E

#3F659E is a mid, moderate blue. Relative luminance 0.128; OKLCH L 50.6% C 0.101 H 258.3°. Best body text is #FFFFFF at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#3F659E
RGB	rgb(63, 101, 158)
HSL	hsl(216, 43%, 43%)
HSV	hsv(216, 60%, 62%)
CMYK	cmyk(60.1%, 36.1%, 0%, 38%)
CIE-LAB	lab(42.51, 4.58, -35.00)
CIE-LCH	lch(42.51, 35.29, 277.46°)
OKLab	oklab(50.56% -0.0205 -0.0991)
OKLCH	oklch(50.56% 0.101 258.3)
XYZ	xyz(12.8730, 12.8316, 34.1395)
Luminance	0.1283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F659E #9E783F

analogous

#3F949E #3F659E #483F9E

triadic

#3F659E #9E3F65 #659E3F

tetradic

#3F659E #9E3F94 #9E783F #3F9E48

square

#3F659E #9E3F94 #9E783F #3F9E48

split-complementary

#3F659E #9E483F #949E3F

monochromatic

#1C2D46 #2E4972 #3F659E #5C83BE #88A5D0

Accessibility & contrast

On white

5.89

#3F659E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#3F659E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F659E

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F659E	#FFFFFF	#000000	##FFFFFF
##3F659E	1.00	5.89	3.57	5.89
#FFFFFF	5.89	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D69A0

Deuteranopia (green-blind)

#41609D

Tritanopia (blue-blind)

#00727A

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #3f659e;
/* rgb */ color: rgb(63, 101, 158);
/* oklch */ color: oklch(50.6% 0.101 258.3);

Tailwind

colors: {
  custom: {
    50: '#7c90bb',
    500: '#3f659e',
    950: '#000000',
  },
}

SCSS

$custom: #3f659e;
$custom-light: #7c90bb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f659e",
  "rgb": {
    "r": 63,
    "g": 101,
    "b": 158
  },
  "hsl": {
    "h": 216,
    "s": 42.986,
    "l": 43.333
  },
  "oklch": {
    "l": 0.50556,
    "c": 0.10117,
    "h": 258.3
  },
  "luminance": 0.12833
}

Semantic roles & 50–950 ramp

primary

#3F659E

secondary

#BAA27F

accent

#A055D3

background

#F7F8FB

surface

#EEF0F6

border

#C9CBD0

text

#0A0C12

muted

#7C7D81

Preview Lab

Preview with #3F659E

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

Preview Lab → · Contrast checker → · Palette generator →