#3758B3#3758B3

#3758B3 is a mid, vivid blue. Relative luminance 0.110; OKLCH L 48.7% C 0.150 H 266.0°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#3758B3
RGB	rgb(55, 88, 179)
HSL	hsl(224, 53%, 46%)
HSV	hsv(224, 69%, 70%)
CMYK	cmyk(69.3%, 50.8%, 0%, 29.8%)
CIE-LAB	lab(39.66, 19.03, -51.99)
CIE-LCH	lch(39.66, 55.36, 290.10°)
OKLab	oklab(48.66% -0.0104 -0.1493)
OKLCH	oklch(48.66% 0.15 266)
XYZ	xyz(13.1991, 11.0450, 44.0754)
Luminance	0.1105 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758B3 #B39237

analogous

#3796B3 #3758B3 #5437B3

triadic

#3758B3 #B33758 #58B337

tetradic

#3758B3 #B33796 #B39237 #37B354

square

#3758B3 #B33796 #B39237 #37B354

split-complementary

#3758B3 #B35437 #96B337

monochromatic

#1A2A55 #294184 #3758B3 #5B79CD #8A9FDB

Accessibility & contrast

On white

6.54

#3758B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#3758B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758B3

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758B3	#FFFFFF	#000000	##FFFFFF
##3758B3	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2263B6

Deuteranopia (green-blind)

#0058B1

Tritanopia (blue-blind)

#006D7D

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3758b3;
/* rgb */ color: rgb(55, 88, 179);
/* oklch */ color: oklch(48.7% 0.150 266.0);

Tailwind

colors: {
  custom: {
    50: '#7d86ca',
    500: '#3758b3',
    950: '#000000',
  },
}

SCSS

$custom: #3758b3;
$custom-light: #7d86ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3758b3",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 179
  },
  "hsl": {
    "h": 224.032,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.4866,
    "c": 0.14962,
    "h": 266
  },
  "luminance": 0.11046
}

Semantic roles & 50–950 ramp

primary

#3758B3

secondary

#C5B381

accent

#B64BDC

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3758B3

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

Preview Lab → · Contrast checker → · Palette generator →