#3758BC#3758BC

#3758BC is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.3% C 0.162 H 266.6°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#3758BC
RGB	rgb(55, 88, 188)
HSL	hsl(225, 55%, 48%)
HSV	hsv(225, 71%, 74%)
CMYK	cmyk(70.7%, 53.2%, 0%, 26.3%)
CIE-LAB	lab(40.28, 22.34, -56.26)
CIE-LCH	lch(40.28, 60.53, 291.66°)
OKLab	oklab(49.33% -0.0095 -0.1618)
OKLCH	oklch(49.33% 0.162 266.6)
XYZ	xyz(14.1392, 11.4211, 49.0265)
Luminance	0.1142 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758BC #BC9B37

analogous

#379ABC #3758BC #5937BC

triadic

#3758BC #BC3758 #58BC37

tetradic

#3758BC #BC379A #BC9B37 #37BC59

square

#3758BC #BC379A #BC9B37 #37BC59

split-complementary

#3758BC #BC5937 #9ABC37

monochromatic

#1B2C5D #29428D #3758BC #607CD0 #8FA3DE

Accessibility & contrast

On white

6.39

#3758BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#3758BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758BC

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758BC	#FFFFFF	#000000	##FFFFFF
##3758BC	1.00	6.39	3.28	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1165C0

Deuteranopia (green-blind)

#0059BA

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3758bc;
/* rgb */ color: rgb(55, 88, 188);
/* oklch */ color: oklch(49.3% 0.162 266.6);

Tailwind

colors: {
  custom: {
    50: '#7e86d1',
    500: '#3758bc',
    950: '#000000',
  },
}

SCSS

$custom: #3758bc;
$custom-light: #7e86d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3758bc",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 188
  },
  "hsl": {
    "h": 225.113,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.49332,
    "c": 0.1621,
    "h": 266.6
  },
  "luminance": 0.11423
}

Semantic roles & 50–950 ramp

primary

#3758BC

secondary

#C9B886

accent

#B94ADE

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3758BC

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

Preview Lab → · Contrast checker → · Palette generator →