#3F75A5#3F75A5

#3F75A5 is a mid, moderate cyan. Relative luminance 0.165; OKLCH L 54.7% C 0.095 H 247.3°. Best body text is #FFFFFF at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#3F75A5
RGB	rgb(63, 117, 165)
HSL	hsl(208, 45%, 45%)
HSV	hsv(208, 62%, 65%)
CMYK	cmyk(61.8%, 29.1%, 0%, 35.3%)
CIE-LAB	lab(47.62, -2.81, -31.09)
CIE-LCH	lch(47.62, 31.22, 264.83°)
OKLab	oklab(54.67% -0.0366 -0.0876)
OKLCH	oklch(54.67% 0.095 247.3)
XYZ	xyz(15.2002, 16.4945, 37.9727)
Luminance	0.1650 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F75A5 #A56F3F

analogous

#3FA5A2 #3F75A5 #3F42A5

triadic

#3F75A5 #A53F75 #75A53F

tetradic

#3F75A5 #A23FA5 #A56F3F #42A53F

square

#3F75A5 #A23FA5 #A56F3F #42A53F

split-complementary

#3F75A5 #A53F42 #A5A23F

monochromatic

#1D364C #2E5679 #3F75A5 #5F94C2 #8CB1D3

Accessibility & contrast

On white

4.88

#3F75A5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#3F75A5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F75A5

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F75A5	#FFFFFF	#000000	##FFFFFF
##3F75A5	1.00	4.88	4.30	4.88
#FFFFFF	4.88	1.00	21.00	1.00
#000000	4.30	21.00	1.00	21.00
##FFFFFF	4.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6077A7

Deuteranopia (green-blind)

#536CA4

Tritanopia (blue-blind)

#008086

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3f75a5;
/* rgb */ color: rgb(63, 117, 165);
/* oklch */ color: oklch(54.7% 0.095 247.3);

Tailwind

colors: {
  custom: {
    50: '#7d9cc0',
    500: '#3f75a5',
    950: '#000000',
  },
}

SCSS

$custom: #3f75a5;
$custom-light: #7d9cc0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f75a5",
  "rgb": {
    "r": 63,
    "g": 117,
    "b": 165
  },
  "hsl": {
    "h": 208.235,
    "s": 44.737,
    "l": 44.706
  },
  "oklch": {
    "l": 0.54671,
    "c": 0.0949,
    "h": 247.3
  },
  "luminance": 0.16496
}

Semantic roles & 50–950 ramp

primary

#3F75A5

secondary

#BE9E82

accent

#9053D4

background

#F8F9FB

surface

#EFF2F7

border

#CACCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #3F75A5

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

Preview Lab → · Contrast checker → · Palette generator →