#3943B8#3943B8

#3943B8 is a mid, vivid blue. Relative luminance 0.083; OKLCH L 45.1% C 0.182 H 272.9°. Best body text is #FFFFFF at 7.87:1 contrast (WCAG AA passes).

Color values

HEX	#3943B8
RGB	rgb(57, 67, 184)
HSL	hsl(235, 53%, 47%)
HSV	hsv(235, 69%, 72%)
CMYK	cmyk(69%, 63.6%, 0%, 27.8%)
CIE-LAB	lab(34.69, 34.72, -63.00)
CIE-LCH	lch(34.69, 71.93, 298.86°)
OKLab	oklab(45.1% 0.0091 -0.1818)
OKLCH	oklch(45.1% 0.182 272.9)
XYZ	xyz(12.3433, 8.3437, 46.2981)
Luminance	0.0834 (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

#3943B8 #B8AE39

analogous

#3982B8 #3943B8 #6F39B8

triadic

#3943B8 #B83943 #43B839

tetradic

#3943B8 #B83982 #B8AE39 #39B86F

square

#3943B8 #B83982 #B8AE39 #39B86F

split-complementary

#3943B8 #B86F39 #82B839

monochromatic

#1C215B #2B3289 #3943B8 #6069CE #8F95DC

Accessibility & contrast

On white

7.87

#3943B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#3943B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3943B8

7.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3943B8	#FFFFFF	#000000	##FFFFFF
##3943B8	1.00	7.87	2.67	7.87
#FFFFFF	7.87	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057BC

Deuteranopia (green-blind)

#004CB6

Tritanopia (blue-blind)

#006177

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3943b8;
/* rgb */ color: rgb(57, 67, 184);
/* oklch */ color: oklch(45.1% 0.182 272.9);

Tailwind

colors: {
  custom: {
    50: '#8077ce',
    500: '#3943b8',
    950: '#000000',
  },
}

SCSS

$custom: #3943b8;
$custom-light: #8077ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3943b8",
  "rgb": {
    "r": 57,
    "g": 67,
    "b": 184
  },
  "hsl": {
    "h": 235.276,
    "s": 52.697,
    "l": 47.255
  },
  "oklch": {
    "l": 0.45095,
    "c": 0.18207,
    "h": 272.9
  },
  "luminance": 0.08345
}

Semantic roles & 50–950 ramp

primary

#3943B8

secondary

#C7C286

accent

#D14CDC

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3943B8

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

Preview Lab → · Contrast checker → · Palette generator →