#3F74A5#3F74A5

#3F74A5 is a mid, moderate cyan. Relative luminance 0.163; OKLCH L 54.4% C 0.096 H 248.3°. Best body text is #FFFFFF at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#3F74A5
RGB	rgb(63, 116, 165)
HSL	hsl(209, 45%, 45%)
HSV	hsv(209, 62%, 65%)
CMYK	cmyk(61.8%, 29.7%, 0%, 35.3%)
CIE-LAB	lab(47.32, -2.21, -31.56)
CIE-LCH	lch(47.32, 31.64, 265.99°)
OKLab	oklab(54.44% -0.0355 -0.0889)
OKLCH	oklch(54.44% 0.096 248.3)
XYZ	xyz(15.0843, 16.2627, 37.9341)
Luminance	0.1626 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F74A5 #A5703F

analogous

#3FA5A3 #3F74A5 #3F41A5

triadic

#3F74A5 #A53F74 #74A53F

tetradic

#3F74A5 #A33FA5 #A5703F #41A53F

square

#3F74A5 #A33FA5 #A5703F #41A53F

split-complementary

#3F74A5 #A53F41 #A5A33F

monochromatic

#1D364C #2E5579 #3F74A5 #5F93C2 #8CB1D3

Accessibility & contrast

On white

4.94

#3F74A5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.25

#3F74A5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F74A5

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F74A5	#FFFFFF	#000000	##FFFFFF
##3F74A5	1.00	4.94	4.25	4.94
#FFFFFF	4.94	1.00	21.00	1.00
#000000	4.25	21.00	1.00	21.00
##FFFFFF	4.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F76A7

Deuteranopia (green-blind)

#516CA4

Tritanopia (blue-blind)

#008085

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3f74a5;
/* rgb */ color: rgb(63, 116, 165);
/* oklch */ color: oklch(54.4% 0.096 248.3);

Tailwind

colors: {
  custom: {
    50: '#7d9bc0',
    500: '#3f74a5',
    950: '#000000',
  },
}

SCSS

$custom: #3f74a5;
$custom-light: #7d9bc0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f74a5",
  "rgb": {
    "r": 63,
    "g": 116,
    "b": 165
  },
  "hsl": {
    "h": 208.824,
    "s": 44.737,
    "l": 44.706
  },
  "oklch": {
    "l": 0.54435,
    "c": 0.09575,
    "h": 248.3
  },
  "luminance": 0.16264
}

Semantic roles & 50–950 ramp

primary

#3F74A5

secondary

#BE9F82

accent

#9153D4

background

#F8F9FB

surface

#EFF2F7

border

#CACCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #3F74A5

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

Preview Lab → · Contrast checker → · Palette generator →