#3F72BA#3F72BA

#3F72BA is a mid, vivid blue. Relative luminance 0.166; OKLCH L 55.2% C 0.125 H 257.3°. Best body text is #FFFFFF at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#3F72BA
RGB	rgb(63, 114, 186)
HSL	hsl(215, 49%, 49%)
HSV	hsv(215, 66%, 73%)
CMYK	cmyk(66.1%, 38.7%, 0%, 27.1%)
CIE-LAB	lab(47.80, 6.32, -43.02)
CIE-LCH	lch(47.80, 43.49, 278.36°)
OKLab	oklab(55.16% -0.0276 -0.1224)
OKLCH	oklch(55.16% 0.125 257.3)
XYZ	xyz(16.9269, 16.6349, 48.7637)
Luminance	0.1664 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F72BA #BA873F

analogous

#3FB0BA #3F72BA #4A3FBA

triadic

#3F72BA #BA3F72 #72BA3F

tetradic

#3F72BA #BA3FB0 #BA873F #3FBA4A

square

#3F72BA #BA3FB0 #BA873F #3FBA4A

split-complementary

#3F72BA #BA4A3F #B0BA3F

monochromatic

#203A5F #30568C #3F72BA #6A93CC #97B4DC

Accessibility & contrast

On white

4.85

#3F72BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.33

#3F72BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F72BA

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F72BA	#FFFFFF	#000000	##FFFFFF
##3F72BA	1.00	4.85	4.33	4.85
#FFFFFF	4.85	1.00	21.00	1.00
#000000	4.33	21.00	1.00	21.00
##FFFFFF	4.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5278BD

Deuteranopia (green-blind)

#406CB9

Tritanopia (blue-blind)

#00838D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3f72ba;
/* rgb */ color: rgb(63, 114, 186);
/* oklch */ color: oklch(55.2% 0.125 257.3);

Tailwind

colors: {
  custom: {
    50: '#819acf',
    500: '#3f72ba',
    950: '#000000',
  },
}

SCSS

$custom: #3f72ba;
$custom-light: #819acf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f72ba",
  "rgb": {
    "r": 63,
    "g": 114,
    "b": 186
  },
  "hsl": {
    "h": 215.122,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.55159,
    "c": 0.12545,
    "h": 257.3
  },
  "luminance": 0.16637
}

Semantic roles & 50–950 ramp

primary

#3F72BA

secondary

#C8AF8D

accent

#A04FD9

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F72BA

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

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