#3759BD#3759BD

#3759BD is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.6% C 0.162 H 266.4°. Best body text is #FFFFFF at 6.31:1 contrast (WCAG AA passes).

Color values

HEX	#3759BD
RGB	rgb(55, 89, 189)
HSL	hsl(225, 55%, 48%)
HSV	hsv(225, 71%, 74%)
CMYK	cmyk(70.9%, 52.9%, 0%, 25.9%)
CIE-LAB	lab(40.62, 22.06, -56.29)
CIE-LCH	lch(40.62, 60.46, 291.40°)
OKLab	oklab(49.61% -0.0103 -0.1619)
OKLCH	oklch(49.61% 0.162 266.4)
XYZ	xyz(14.3300, 11.6296, 49.6238)
Luminance	0.1163 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3759BD #BD9B37

analogous

#379CBD #3759BD #5837BD

triadic

#3759BD #BD3759 #59BD37

tetradic

#3759BD #BD379C #BD9B37 #37BD58

square

#3759BD #BD379C #BD9B37 #37BD58

split-complementary

#3759BD #BD5837 #9CBD37

monochromatic

#1B2C5E #29438E #3759BD #607DD1 #90A4DF

Accessibility & contrast

On white

6.31

#3759BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#3759BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3759BD

6.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3759BD	#FFFFFF	#000000	##FFFFFF
##3759BD	1.00	6.31	3.33	6.31
#FFFFFF	6.31	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1366C1

Deuteranopia (green-blind)

#005ABB

Tritanopia (blue-blind)

#007182

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3759bd;
/* rgb */ color: rgb(55, 89, 189);
/* oklch */ color: oklch(49.6% 0.162 266.4);

Tailwind

colors: {
  custom: {
    50: '#7f87d2',
    500: '#3759bd',
    950: '#000000',
  },
}

SCSS

$custom: #3759bd;
$custom-light: #7f87d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3759bd",
  "rgb": {
    "r": 55,
    "g": 89,
    "b": 189
  },
  "hsl": {
    "h": 224.776,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.49612,
    "c": 0.16223,
    "h": 266.4
  },
  "luminance": 0.11631
}

Semantic roles & 50–950 ramp

primary

#3759BD

secondary

#C9B886

accent

#B94ADE

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3759BD

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

Preview Lab → · Contrast checker → · Palette generator →