#3741B6#3741B6

#3741B6 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.4% C 0.182 H 272.7°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#3741B6
RGB	rgb(55, 65, 182)
HSL	hsl(235, 54%, 46%)
HSV	hsv(235, 70%, 71%)
CMYK	cmyk(69.8%, 64.3%, 0%, 28.6%)
CIE-LAB	lab(33.92, 35.01, -63.08)
CIE-LCH	lch(33.92, 72.15, 299.03°)
OKLab	oklab(44.45% 0.0084 -0.1821)
OKLCH	oklch(44.45% 0.182 272.7)
XYZ	xyz(11.9065, 7.9691, 45.1576)
Luminance	0.0797 (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

#3741B6 #B6AC37

analogous

#3781B6 #3741B6 #6D37B6

triadic

#3741B6 #B63741 #41B637

tetradic

#3741B6 #B63781 #B6AC37 #37B66D

square

#3741B6 #B63781 #B6AC37 #37B66D

split-complementary

#3741B6 #B66D37 #81B637

monochromatic

#1B1F58 #293087 #3741B6 #5C65CE #8B92DC

Accessibility & contrast

On white

8.10

#3741B6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#3741B6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3741B6

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3741B6	#FFFFFF	#000000	##FFFFFF
##3741B6	1.00	8.10	2.59	8.10
#FFFFFF	8.10	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BA

Deuteranopia (green-blind)

#004AB4

Tritanopia (blue-blind)

#005F75

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3741b6;
/* rgb */ color: rgb(55, 65, 182);
/* oklch */ color: oklch(44.4% 0.182 272.7);

Tailwind

colors: {
  custom: {
    50: '#7f76cd',
    500: '#3741b6',
    950: '#000000',
  },
}

SCSS

$custom: #3741b6;
$custom-light: #7f76cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3741b6",
  "rgb": {
    "r": 55,
    "g": 65,
    "b": 182
  },
  "hsl": {
    "h": 235.276,
    "s": 53.586,
    "l": 46.471
  },
  "oklch": {
    "l": 0.44445,
    "c": 0.18235,
    "h": 272.7
  },
  "luminance": 0.0797
}

Semantic roles & 50–950 ramp

primary

#3741B6

secondary

#C6C182

accent

#D14BDD

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #3741B6

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

Preview Lab → · Contrast checker → · Palette generator →