#3F73A5#3F73A5

#3F73A5 is a mid, moderate cyan. Relative luminance 0.160; OKLCH L 54.2% C 0.097 H 249.2°. Best body text is #FFFFFF at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#3F73A5
RGB	rgb(63, 115, 165)
HSL	hsl(209, 45%, 45%)
HSV	hsv(209, 62%, 65%)
CMYK	cmyk(61.8%, 30.3%, 0%, 35.3%)
CIE-LAB	lab(47.02, -1.61, -32.03)
CIE-LCH	lch(47.02, 32.07, 267.12°)
OKLab	oklab(54.2% -0.0343 -0.0903)
OKLCH	oklch(54.2% 0.097 249.2)
XYZ	xyz(14.9697, 16.0334, 37.8959)
Luminance	0.1603 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F73A5 #A5713F

analogous

#3FA5A4 #3F73A5 #3F40A5

triadic

#3F73A5 #A53F73 #73A53F

tetradic

#3F73A5 #A43FA5 #A5713F #40A53F

square

#3F73A5 #A43FA5 #A5713F #40A53F

split-complementary

#3F73A5 #A53F40 #A5A43F

monochromatic

#1D354C #2E5479 #3F73A5 #5F92C2 #8CB0D3

Accessibility & contrast

On white

4.99

#3F73A5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.21

#3F73A5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F73A5

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F73A5	#FFFFFF	#000000	##FFFFFF
##3F73A5	1.00	4.99	4.21	4.99
#FFFFFF	4.99	1.00	21.00	1.00
#000000	4.21	21.00	1.00	21.00
##FFFFFF	4.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E75A7

Deuteranopia (green-blind)

#506BA4

Tritanopia (blue-blind)

#007F85

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3f73a5;
/* rgb */ color: rgb(63, 115, 165);
/* oklch */ color: oklch(54.2% 0.097 249.2);

Tailwind

colors: {
  custom: {
    50: '#7d9bc0',
    500: '#3f73a5',
    950: '#000000',
  },
}

SCSS

$custom: #3f73a5;
$custom-light: #7d9bc0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f73a5",
  "rgb": {
    "r": 63,
    "g": 115,
    "b": 165
  },
  "hsl": {
    "h": 209.412,
    "s": 44.737,
    "l": 44.706
  },
  "oklch": {
    "l": 0.542,
    "c": 0.09661,
    "h": 249.2
  },
  "luminance": 0.16035
}

Semantic roles & 50–950 ramp

primary

#3F73A5

secondary

#BE9F82

accent

#9353D4

background

#F8F9FB

surface

#EFF2F7

border

#CACCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #3F73A5

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

Preview Lab → · Contrast checker → · Palette generator →