#3741BF#3741BF

#3741BF is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.3% C 0.194 H 272.3°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#3741BF
RGB	rgb(55, 65, 191)
HSL	hsl(236, 55%, 48%)
HSV	hsv(236, 71%, 75%)
CMYK	cmyk(71.2%, 66%, 0%, 25.1%)
CIE-LAB	lab(34.71, 38.16, -67.09)
CIE-LCH	lch(34.71, 77.19, 299.63°)
OKLab	oklab(45.27% 0.0078 -0.1939)
OKLCH	oklch(45.27% 0.194 272.3)
XYZ	xyz(12.8666, 8.3531, 50.2143)
Luminance	0.0835 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3741BF #BFB537

analogous

#3785BF #3741BF #7137BF

triadic

#3741BF #BF3741 #41BF37

tetradic

#3741BF #BF3785 #BFB537 #37BF71

square

#3741BF #BF3785 #BFB537 #37BF71

split-complementary

#3741BF #BF7137 #85BF37

monochromatic

#1C2160 #29318F #3741BF #626AD2 #9197DF

Accessibility & contrast

On white

7.86

#3741BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#3741BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3741BF

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3741BF	#FFFFFF	#000000	##FFFFFF
##3741BF	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C3

Deuteranopia (green-blind)

#004BBD

Tritanopia (blue-blind)

#00627A

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3741bf;
/* rgb */ color: rgb(55, 65, 191);
/* oklch */ color: oklch(45.3% 0.194 272.3);

Tailwind

colors: {
  custom: {
    50: '#8176d3',
    500: '#3741bf',
    950: '#000000',
  },
}

SCSS

$custom: #3741bf;
$custom-light: #8176d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3741bf",
  "rgb": {
    "r": 55,
    "g": 65,
    "b": 191
  },
  "hsl": {
    "h": 235.588,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.45265,
    "c": 0.19405,
    "h": 272.3
  },
  "luminance": 0.08354
}

Semantic roles & 50–950 ramp

primary

#3741BF

secondary

#CAC588

accent

#D449DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3741BF

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

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