#3F75B2#3F75B2

#3F75B2 is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 55.4% C 0.112 H 252.9°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#3F75B2
RGB	rgb(63, 117, 178)
HSL	hsl(212, 48%, 47%)
HSV	hsv(212, 65%, 70%)
CMYK	cmyk(64.6%, 34.3%, 0%, 30.2%)
CIE-LAB	lab(48.25, 1.67, -37.67)
CIE-LCH	lch(48.25, 37.71, 272.54°)
OKLab	oklab(55.38% -0.0327 -0.1067)
OKLCH	oklch(55.38% 0.112 252.9)
XYZ	xyz(16.4441, 16.9921, 44.5240)
Luminance	0.1699 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F75B2 #B27C3F

analogous

#3FAFB2 #3F75B2 #423FB2

triadic

#3F75B2 #B23F75 #75B23F

tetradic

#3F75B2 #B23FAF #B27C3F #3FB242

square

#3F75B2 #B23FAF #B27C3F #3FB242

split-complementary

#3F75B2 #B2423F #AFB23F

monochromatic

#1F3A58 #2F5785 #3F75B2 #6694C9 #93B4D9

Accessibility & contrast

On white

4.77

#3F75B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#3F75B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F75B2

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F75B2	#FFFFFF	#000000	##FFFFFF
##3F75B2	1.00	4.77	4.40	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B79B5

Deuteranopia (green-blind)

#4B6EB1

Tritanopia (blue-blind)

#00838B

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3f75b2;
/* rgb */ color: rgb(63, 117, 178);
/* oklch */ color: oklch(55.4% 0.112 252.9);

Tailwind

colors: {
  custom: {
    50: '#7f9cc9',
    500: '#3f75b2',
    950: '#000000',
  },
}

SCSS

$custom: #3f75b2;
$custom-light: #7f9cc9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f75b2",
  "rgb": {
    "r": 63,
    "g": 117,
    "b": 178
  },
  "hsl": {
    "h": 211.826,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.55376,
    "c": 0.11161,
    "h": 252.9
  },
  "luminance": 0.16994
}

Semantic roles & 50–950 ramp

primary

#3F75B2

secondary

#C4A889

accent

#9850D7

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3F75B2

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

Preview Lab → · Contrast checker → · Palette generator →