#3F61BF#3F61BF

#3F61BF is a mid, vivid blue. Relative luminance 0.134; OKLCH L 51.8% C 0.153 H 266.2°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#3F61BF
RGB	rgb(63, 97, 191)
HSL	hsl(224, 50%, 50%)
HSV	hsv(224, 67%, 75%)
CMYK	cmyk(67%, 49.2%, 0%, 25.1%)
CIE-LAB	lab(43.31, 18.84, -53.10)
CIE-LCH	lch(43.31, 56.34, 289.54°)
OKLab	oklab(51.8% -0.01 -0.1522)
OKLCH	oklch(51.8% 0.153 266.2)
XYZ	xyz(15.7253, 13.3662, 51.0313)
Luminance	0.1337 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F61BF #BF9D3F

analogous

#3FA1BF #3F61BF #5D3FBF

triadic

#3F61BF #BF3F61 #61BF3F

tetradic

#3F61BF #BF3FA1 #BF9D3F #3FBF5D

square

#3F61BF #BF3FA1 #BF9D3F #3FBF5D

split-complementary

#3F61BF #BF5D3F #A1BF3F

monochromatic

#213263 #304A91 #3F61BF #6D87CF #9BACDE

Accessibility & contrast

On white

5.72

#3F61BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#3F61BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F61BF

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F61BF	#FFFFFF	#000000	##FFFFFF
##3F61BF	1.00	5.72	3.67	5.72
#FFFFFF	5.72	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D6CC2

Deuteranopia (green-blind)

#0861BD

Tritanopia (blue-blind)

#007787

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f61bf;
/* rgb */ color: rgb(63, 97, 191);
/* oklch */ color: oklch(51.8% 0.153 266.2);

Tailwind

colors: {
  custom: {
    50: '#828dd3',
    500: '#3f61bf',
    950: '#000000',
  },
}

SCSS

$custom: #3f61bf;
$custom-light: #828dd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f61bf",
  "rgb": {
    "r": 63,
    "g": 97,
    "b": 191
  },
  "hsl": {
    "h": 224.063,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.51801,
    "c": 0.15255,
    "h": 266.2
  },
  "luminance": 0.13368
}

Semantic roles & 50–950 ramp

primary

#3F61BF

secondary

#CABA90

accent

#B54EDA

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #3F61BF

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

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