#3F75BE#3F75BE

#3F75BE is a mid, vivid cyan. Relative luminance 0.175; OKLCH L 56.1% C 0.128 H 256.6°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3F75BE
RGB	rgb(63, 117, 190)
HSL	hsl(214, 50%, 50%)
HSV	hsv(214, 67%, 75%)
CMYK	cmyk(66.8%, 38.4%, 0%, 25.5%)
CIE-LAB	lab(48.88, 5.89, -43.61)
CIE-LCH	lch(48.88, 44.01, 277.69°)
OKLab	oklab(56.07% -0.0297 -0.1241)
OKLCH	oklch(56.07% 0.128 256.6)
XYZ	xyz(17.7021, 17.4953, 51.1492)
Luminance	0.1750 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F75BE #BE883F

analogous

#3FB5BE #3F75BE #483FBE

triadic

#3F75BE #BE3F75 #75BE3F

tetradic

#3F75BE #BE3FB5 #BE883F #3FBE48

square

#3F75BE #BE3FB5 #BE883F #3FBE48

split-complementary

#3F75BE #BE483F #B5BE3F

monochromatic

#213C62 #305990 #3F75BE #6C96CE #9AB7DD

Accessibility & contrast

On white

4.67

#3F75BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#3F75BE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3F75BE

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F75BE	#FFFFFF	#000000	##FFFFFF
##3F75BE	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#547BC1

Deuteranopia (green-blind)

#426FBD

Tritanopia (blue-blind)

#008690

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3f75be;
/* rgb */ color: rgb(63, 117, 190);
/* oklch */ color: oklch(56.1% 0.128 256.6);

Tailwind

colors: {
  custom: {
    50: '#819cd2',
    500: '#3f75be',
    950: '#000000',
  },
}

SCSS

$custom: #3f75be;
$custom-light: #819cd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f75be",
  "rgb": {
    "r": 63,
    "g": 117,
    "b": 190
  },
  "hsl": {
    "h": 214.488,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.56072,
    "c": 0.12758,
    "h": 256.6
  },
  "luminance": 0.17497
}

Semantic roles & 50–950 ramp

primary

#3F75BE

secondary

#C9B18F

accent

#9E4EDA

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F75BE

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

Preview Lab → · Contrast checker → · Palette generator →