#3759B7#3759B7

#3759B7 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.2% C 0.154 H 265.9°. Best body text is #FFFFFF at 6.41:1 contrast (WCAG AA passes).

Color values

HEX	#3759B7
RGB	rgb(55, 89, 183)
HSL	hsl(224, 54%, 47%)
HSV	hsv(224, 70%, 72%)
CMYK	cmyk(69.9%, 51.4%, 0%, 28.2%)
CIE-LAB	lab(40.20, 19.85, -53.45)
CIE-LCH	lch(40.20, 57.02, 290.37°)
OKLab	oklab(49.16% -0.0109 -0.1536)
OKLCH	oklch(49.16% 0.154 265.9)
XYZ	xyz(13.6922, 11.3745, 46.2645)
Luminance	0.1138 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3759B7 #B79537

analogous

#3799B7 #3759B7 #5537B7

triadic

#3759B7 #B73759 #59B737

tetradic

#3759B7 #B73799 #B79537 #37B755

square

#3759B7 #B73799 #B79537 #37B755

split-complementary

#3759B7 #B75537 #99B737

monochromatic

#1B2B59 #294288 #3759B7 #5D7BCE #8CA1DC

Accessibility & contrast

On white

6.41

#3759B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#3759B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3759B7

6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3759B7	#FFFFFF	#000000	##FFFFFF
##3759B7	1.00	6.41	3.28	6.41
#FFFFFF	6.41	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F65BA

Deuteranopia (green-blind)

#0059B5

Tritanopia (blue-blind)

#006F7F

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3759b7;
/* rgb */ color: rgb(55, 89, 183);
/* oklch */ color: oklch(49.2% 0.154 265.9);

Tailwind

colors: {
  custom: {
    50: '#7d87cd',
    500: '#3759b7',
    950: '#000000',
  },
}

SCSS

$custom: #3759b7;
$custom-light: #7d87cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3759b7",
  "rgb": {
    "r": 55,
    "g": 89,
    "b": 183
  },
  "hsl": {
    "h": 224.063,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.49164,
    "c": 0.15395,
    "h": 265.9
  },
  "luminance": 0.11376
}

Semantic roles & 50–950 ramp

primary

#3759B7

secondary

#C7B583

accent

#B64BDD

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3759B7

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

Preview Lab → · Contrast checker → · Palette generator →