#3437DD#3437DD

#3437DD is a mid, highly saturated blue. Relative luminance 0.087; OKLCH L 46.6% C 0.242 H 271.3°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#3437DD
RGB	rgb(52, 55, 221)
HSL	hsl(239, 71%, 54%)
HSV	hsv(239, 76%, 87%)
CMYK	cmyk(76.5%, 75.1%, 0%, 13.3%)
CIE-LAB	lab(35.36, 53.70, -83.42)
CIE-LCH	lch(35.36, 99.21, 302.77°)
OKLab	oklab(46.57% 0.0055 -0.2415)
OKLCH	oklch(46.57% 0.242 271.3)
XYZ	xyz(15.8291, 8.6812, 69.2340)
Luminance	0.0868 (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

#3437DD #DDDA34

analogous

#348BDD #3437DD #8534DD

triadic

#3437DD #DD3437 #37DD34

tetradic

#3437DD #DD348B #DDDA34 #34DD85

square

#3437DD #DD348B #DDDA34 #34DD85

split-complementary

#3437DD #DD8534 #8BDD34

monochromatic

#161881 #1E21B5 #3437DD #686BE6 #9D9EEF

Accessibility & contrast

On white

7.67

#3437DD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#3437DD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3437DD

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3437DD	#FFFFFF	#000000	##FFFFFF
##3437DD	1.00	7.67	2.74	7.67
#FFFFFF	7.67	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BE2

Deuteranopia (green-blind)

#004BDA

Tritanopia (blue-blind)

#006888

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3437dd;
/* rgb */ color: rgb(52, 55, 221);
/* oklch */ color: oklch(46.6% 0.242 271.3);

Tailwind

colors: {
  custom: {
    50: '#8770e9',
    500: '#3437dd',
    950: '#000000',
  },
}

SCSS

$custom: #3437dd;
$custom-light: #8770e9;
$custom-dark: #000000;

JSON

{
  "hex": "#3437dd",
  "rgb": {
    "r": 52,
    "g": 55,
    "b": 221
  },
  "hsl": {
    "h": 238.935,
    "s": 71.308,
    "l": 53.529
  },
  "oklch": {
    "l": 0.46566,
    "c": 0.2416,
    "h": 271.3
  },
  "luminance": 0.08683
}

Semantic roles & 50–950 ramp

primary

#3437DD

secondary

#DBD992

accent

#EB3AEE

background

#F9F6FE

surface

#F2ECFD

border

#CCC7D5

text

#0D0816

muted

#7E7B84

Preview Lab

Preview with #3437DD

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

Preview Lab → · Contrast checker → · Palette generator →