#3F61BA#3F61BA

#3F61BA is a mid, vivid blue. Relative luminance 0.132; OKLCH L 51.5% C 0.146 H 265.8°. Best body text is #FFFFFF at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F61BA
RGB	rgb(63, 97, 186)
HSL	hsl(223, 49%, 49%)
HSV	hsv(223, 66%, 73%)
CMYK	cmyk(66.1%, 47.8%, 0%, 27.1%)
CIE-LAB	lab(42.99, 17.04, -50.70)
CIE-LCH	lch(42.99, 53.49, 288.58°)
OKLab	oklab(51.45% -0.0107 -0.1452)
OKLCH	oklch(51.45% 0.146 265.8)
XYZ	xyz(15.1844, 13.1499, 48.1828)
Luminance	0.1315 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F61BA #BA983F

analogous

#3F9FBA #3F61BA #5B3FBA

triadic

#3F61BA #BA3F61 #61BA3F

tetradic

#3F61BA #BA3F9F #BA983F #3FBA5B

square

#3F61BA #BA3F9F #BA983F #3FBA5B

split-complementary

#3F61BA #BA5B3F #9FBA3F

monochromatic

#20315F #30498C #3F61BA #6A85CC #97AADC

Accessibility & contrast

On white

5.78

#3F61BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#3F61BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F61BA

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F61BA	#FFFFFF	#000000	##FFFFFF
##3F61BA	1.00	5.78	3.63	5.78
#FFFFFF	5.78	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#336BBD

Deuteranopia (green-blind)

#1860B8

Tritanopia (blue-blind)

#007684

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f61ba;
/* rgb */ color: rgb(63, 97, 186);
/* oklch */ color: oklch(51.5% 0.146 265.8);

Tailwind

colors: {
  custom: {
    50: '#818dcf',
    500: '#3f61ba',
    950: '#000000',
  },
}

SCSS

$custom: #3f61ba;
$custom-light: #818dcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f61ba",
  "rgb": {
    "r": 63,
    "g": 97,
    "b": 186
  },
  "hsl": {
    "h": 223.415,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.51452,
    "c": 0.14557,
    "h": 265.8
  },
  "luminance": 0.13151
}

Semantic roles & 50–950 ramp

primary

#3F61BA

secondary

#C8B78D

accent

#B34FD9

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3F61BA

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

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