#3758BD#3758BD

#3758BD is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.4% C 0.163 H 266.7°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#3758BD
RGB	rgb(55, 88, 189)
HSL	hsl(225, 55%, 48%)
HSV	hsv(225, 71%, 74%)
CMYK	cmyk(70.9%, 53.4%, 0%, 25.9%)
CIE-LAB	lab(40.35, 22.71, -56.73)
CIE-LCH	lch(40.35, 61.10, 291.82°)
OKLab	oklab(49.41% -0.0095 -0.1632)
OKLCH	oklch(49.41% 0.163 266.7)
XYZ	xyz(14.2474, 11.4643, 49.5962)
Luminance	0.1147 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758BD #BD9C37

analogous

#379BBD #3758BD #5937BD

triadic

#3758BD #BD3758 #58BD37

tetradic

#3758BD #BD379B #BD9C37 #37BD59

square

#3758BD #BD379B #BD9C37 #37BD59

split-complementary

#3758BD #BD5937 #9BBD37

monochromatic

#1B2C5E #29428E #3758BD #607CD1 #90A3DF

Accessibility & contrast

On white

6.38

#3758BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#3758BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758BD

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758BD	#FFFFFF	#000000	##FFFFFF
##3758BD	1.00	6.38	3.29	6.38
#FFFFFF	6.38	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E66C1

Deuteranopia (green-blind)

#0059BB

Tritanopia (blue-blind)

#007082

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3758bd;
/* rgb */ color: rgb(55, 88, 189);
/* oklch */ color: oklch(49.4% 0.163 266.7);

Tailwind

colors: {
  custom: {
    50: '#7f86d2',
    500: '#3758bd',
    950: '#000000',
  },
}

SCSS

$custom: #3758bd;
$custom-light: #7f86d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3758bd",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 189
  },
  "hsl": {
    "h": 225.224,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.49409,
    "c": 0.16347,
    "h": 266.7
  },
  "luminance": 0.11466
}

Semantic roles & 50–950 ramp

primary

#3758BD

secondary

#C9B986

accent

#BA4ADE

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #3758BD

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

Preview Lab → · Contrast checker → · Palette generator →