#3737AC#3737AC

#3737AC is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.8% C 0.181 H 275.2°. Best body text is #FFFFFF at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#3737AC
RGB	rgb(55, 55, 172)
HSL	hsl(240, 52%, 45%)
HSV	hsv(240, 68%, 67%)
CMYK	cmyk(68%, 68%, 0%, 32.5%)
CIE-LAB	lab(30.69, 37.77, -62.41)
CIE-LCH	lch(30.69, 72.96, 301.18°)
OKLab	oklab(41.82% 0.0165 -0.1802)
OKLCH	oklch(41.82% 0.181 275.2)
XYZ	xyz(10.3857, 6.5222, 39.7333)
Luminance	0.0652 (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

#3737AC #ACAC37

analogous

#3772AC #3737AC #7237AC

triadic

#3737AC #AC3737 #37AC37

tetradic

#3737AC #AC3772 #ACAC37 #37AC72

square

#3737AC #AC3772 #ACAC37 #37AC72

split-complementary

#3737AC #AC7237 #72AC37

monochromatic

#19194F #28287E #3737AC #5757C9 #8585D8

Accessibility & contrast

On white

9.11

#3737AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#3737AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3737AC

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3737AC	#FFFFFF	#000000	##FFFFFF
##3737AC	1.00	9.11	2.30	9.11
#FFFFFF	9.11	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB0

Deuteranopia (green-blind)

#0043AA

Tritanopia (blue-blind)

#00566D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3737ac;
/* rgb */ color: rgb(55, 55, 172);
/* oklch */ color: oklch(41.8% 0.181 275.2);

Tailwind

colors: {
  custom: {
    50: '#7d6ec6',
    500: '#3737ac',
    950: '#000000',
  },
}

SCSS

$custom: #3737ac;
$custom-light: #7d6ec6;
$custom-dark: #000000;

JSON

{
  "hex": "#3737ac",
  "rgb": {
    "r": 55,
    "g": 55,
    "b": 172
  },
  "hsl": {
    "h": 240,
    "s": 51.542,
    "l": 44.51
  },
  "oklch": {
    "l": 0.41824,
    "c": 0.18098,
    "h": 275.2
  },
  "luminance": 0.06523
}

Semantic roles & 50–950 ramp

primary

#3737AC

secondary

#C2C27D

accent

#DB4DDB

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3737AC

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

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