#3943B7#3943B7

#3943B7 is a mid, vivid blue. Relative luminance 0.083; OKLCH L 45.0% C 0.181 H 272.9°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#3943B7
RGB	rgb(57, 67, 183)
HSL	hsl(235, 53%, 47%)
HSV	hsv(235, 69%, 72%)
CMYK	cmyk(68.9%, 63.4%, 0%, 28.2%)
CIE-LAB	lab(34.60, 34.37, -62.55)
CIE-LCH	lch(34.60, 71.37, 298.79°)
OKLab	oklab(45.01% 0.0091 -0.1805)
OKLCH	oklch(45.01% 0.181 272.9)
XYZ	xyz(12.2389, 8.3019, 45.7480)
Luminance	0.0830 (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

#3943B7 #B7AD39

analogous

#3982B7 #3943B7 #6E39B7

triadic

#3943B7 #B73943 #43B739

tetradic

#3943B7 #B73982 #B7AD39 #39B76E

square

#3943B7 #B73982 #B7AD39 #39B76E

split-complementary

#3943B7 #B76E39 #82B739

monochromatic

#1C215A #2A3288 #3943B7 #6068CD #8E95DC

Accessibility & contrast

On white

7.89

#3943B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#3943B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3943B7

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3943B7	#FFFFFF	#000000	##FFFFFF
##3943B7	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057BB

Deuteranopia (green-blind)

#004CB5

Tritanopia (blue-blind)

#006177

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3943b7;
/* rgb */ color: rgb(57, 67, 183);
/* oklch */ color: oklch(45.0% 0.181 272.9);

Tailwind

colors: {
  custom: {
    50: '#8077ce',
    500: '#3943b7',
    950: '#000000',
  },
}

SCSS

$custom: #3943b7;
$custom-light: #8077ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3943b7",
  "rgb": {
    "r": 57,
    "g": 67,
    "b": 183
  },
  "hsl": {
    "h": 235.238,
    "s": 52.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.45006,
    "c": 0.18074,
    "h": 272.9
  },
  "luminance": 0.08303
}

Semantic roles & 50–950 ramp

primary

#3943B7

secondary

#C7C185

accent

#D04CDC

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #3943B7

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

Preview Lab → · Contrast checker → · Palette generator →