#3F61BD#3F61BD

#3F61BD is a mid, vivid blue. Relative luminance 0.133; OKLCH L 51.7% C 0.150 H 266.1°. Best body text is #FFFFFF at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#3F61BD
RGB	rgb(63, 97, 189)
HSL	hsl(224, 50%, 49%)
HSV	hsv(224, 67%, 74%)
CMYK	cmyk(66.7%, 48.7%, 0%, 25.9%)
CIE-LAB	lab(43.18, 18.12, -52.14)
CIE-LCH	lch(43.18, 55.20, 289.17°)
OKLab	oklab(51.66% -0.0103 -0.1494)
OKLCH	oklch(51.66% 0.15 266.1)
XYZ	xyz(15.5067, 13.2788, 49.8801)
Luminance	0.1328 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F61BD #BD9B3F

analogous

#3FA0BD #3F61BD #5C3FBD

triadic

#3F61BD #BD3F61 #61BD3F

tetradic

#3F61BD #BD3FA0 #BD9B3F #3FBD5C

square

#3F61BD #BD3FA0 #BD9B3F #3FBD5C

split-complementary

#3F61BD #BD5C3F #A0BD3F

monochromatic

#203261 #30498F #3F61BD #6B86CE #99ACDD

Accessibility & contrast

On white

5.74

#3F61BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#3F61BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F61BD

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F61BD	#FFFFFF	#000000	##FFFFFF
##3F61BD	1.00	5.74	3.66	5.74
#FFFFFF	5.74	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#306CC0

Deuteranopia (green-blind)

#1061BB

Tritanopia (blue-blind)

#007686

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f61bd;
/* rgb */ color: rgb(63, 97, 189);
/* oklch */ color: oklch(51.7% 0.150 266.1);

Tailwind

colors: {
  custom: {
    50: '#828dd1',
    500: '#3f61bd',
    950: '#000000',
  },
}

SCSS

$custom: #3f61bd;
$custom-light: #828dd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f61bd",
  "rgb": {
    "r": 63,
    "g": 97,
    "b": 189
  },
  "hsl": {
    "h": 223.81,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.5166,
    "c": 0.14976,
    "h": 266.1
  },
  "luminance": 0.1328
}

Semantic roles & 50–950 ramp

primary

#3F61BD

secondary

#C9B98F

accent

#B44EDA

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0C14

muted

#7D7D82

Preview Lab

Preview with #3F61BD

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

Preview Lab → · Contrast checker → · Palette generator →