#3741AA#3741AA

#3741AA is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.4% C 0.166 H 273.1°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#3741AA
RGB	rgb(55, 65, 170)
HSL	hsl(235, 51%, 44%)
HSV	hsv(235, 68%, 67%)
CMYK	cmyk(67.6%, 61.8%, 0%, 33.3%)
CIE-LAB	lab(32.91, 30.77, -57.60)
CIE-LCH	lch(32.91, 65.30, 298.11°)
OKLab	oklab(43.39% 0.009 -0.1661)
OKLCH	oklch(43.39% 0.166 273.1)
XYZ	xyz(10.7191, 7.4941, 38.9040)
Luminance	0.0750 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3741AA #AAA037

analogous

#377BAA #3741AA #6737AA

triadic

#3741AA #AA3741 #41AA37

tetradic

#3741AA #AA377B #AAA037 #37AA67

square

#3741AA #AA377B #AAA037 #37AA67

split-complementary

#3741AA #AA6737 #7BAA37

monochromatic

#191E4E #282F7C #3741AA #5660C8 #848BD7

Accessibility & contrast

On white

8.40

#3741AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#3741AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3741AA

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3741AA	#FFFFFF	#000000	##FFFFFF
##3741AA	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053AD

Deuteranopia (green-blind)

#0048A8

Tritanopia (blue-blind)

#005B6F

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3741aa;
/* rgb */ color: rgb(55, 65, 170);
/* oklch */ color: oklch(43.4% 0.166 273.1);

Tailwind

colors: {
  custom: {
    50: '#7c75c4',
    500: '#3741aa',
    950: '#000000',
  },
}

SCSS

$custom: #3741aa;
$custom-light: #7c75c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3741aa",
  "rgb": {
    "r": 55,
    "g": 65,
    "b": 170
  },
  "hsl": {
    "h": 234.783,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.43388,
    "c": 0.1663,
    "h": 273.1
  },
  "luminance": 0.07495
}

Semantic roles & 50–950 ramp

primary

#3741AA

secondary

#C1BB7C

accent

#CE4DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3741AA

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

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