#3759B3#3759B3

#3759B3 is a mid, vivid blue. Relative luminance 0.112; OKLCH L 48.9% C 0.148 H 265.6°. Best body text is #FFFFFF at 6.48:1 contrast (WCAG AA passes).

Color values

HEX	#3759B3
RGB	rgb(55, 89, 179)
HSL	hsl(224, 53%, 46%)
HSV	hsv(224, 69%, 70%)
CMYK	cmyk(69.3%, 50.3%, 0%, 29.8%)
CIE-LAB	lab(39.93, 18.38, -51.54)
CIE-LCH	lch(39.93, 54.72, 289.62°)
OKLab	oklab(48.87% -0.0113 -0.1479)
OKLCH	oklch(48.87% 0.148 265.6)
XYZ	xyz(13.2818, 11.2103, 44.1029)
Luminance	0.1121 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3759B3 #B39137

analogous

#3797B3 #3759B3 #5337B3

triadic

#3759B3 #B33759 #59B337

tetradic

#3759B3 #B33797 #B39137 #37B353

square

#3759B3 #B33797 #B39137 #37B353

split-complementary

#3759B3 #B35337 #97B337

monochromatic

#1A2A55 #294284 #3759B3 #5B7ACD #8AA0DB

Accessibility & contrast

On white

6.48

#3759B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#3759B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3759B3

6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3759B3	#FFFFFF	#000000	##FFFFFF
##3759B3	1.00	6.48	3.24	6.48
#FFFFFF	6.48	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2564B6

Deuteranopia (green-blind)

#0059B1

Tritanopia (blue-blind)

#006E7D

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3759b3;
/* rgb */ color: rgb(55, 89, 179);
/* oklch */ color: oklch(48.9% 0.148 265.6);

Tailwind

colors: {
  custom: {
    50: '#7c87ca',
    500: '#3759b3',
    950: '#000000',
  },
}

SCSS

$custom: #3759b3;
$custom-light: #7c87ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3759b3",
  "rgb": {
    "r": 55,
    "g": 89,
    "b": 179
  },
  "hsl": {
    "h": 223.548,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.4887,
    "c": 0.14836,
    "h": 265.6
  },
  "luminance": 0.11212
}

Semantic roles & 50–950 ramp

primary

#3759B3

secondary

#C5B281

accent

#B54BDC

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3759B3

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

Preview Lab → · Contrast checker → · Palette generator →