#3758AC#3758AC

#3758AC is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.2% C 0.140 H 265.4°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#3758AC
RGB	rgb(55, 88, 172)
HSL	hsl(223, 52%, 45%)
HSV	hsv(223, 68%, 67%)
CMYK	cmyk(68%, 48.8%, 0%, 32.5%)
CIE-LAB	lab(39.19, 16.45, -48.61)
CIE-LCH	lch(39.19, 51.32, 288.69°)
OKLab	oklab(48.15% -0.0113 -0.1393)
OKLCH	oklch(48.15% 0.14 265.4)
XYZ	xyz(12.5091, 10.7690, 40.4411)
Luminance	0.1077 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758AC #AC8B37

analogous

#3793AC #3758AC #5137AC

triadic

#3758AC #AC3758 #58AC37

tetradic

#3758AC #AC3793 #AC8B37 #37AC51

square

#3758AC #AC3793 #AC8B37 #37AC51

split-complementary

#3758AC #AC5137 #93AC37

monochromatic

#19294F #28407E #3758AC #5777C9 #859DD8

Accessibility & contrast

On white

6.66

#3758AC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#3758AC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758AC

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758AC	#FFFFFF	#000000	##FFFFFF
##3758AC	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B62AF

Deuteranopia (green-blind)

#0D57AA

Tritanopia (blue-blind)

#006C7A

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3758ac;
/* rgb */ color: rgb(55, 88, 172);
/* oklch */ color: oklch(48.2% 0.140 265.4);

Tailwind

colors: {
  custom: {
    50: '#7b86c5',
    500: '#3758ac',
    950: '#000000',
  },
}

SCSS

$custom: #3758ac;
$custom-light: #7b86c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3758ac",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 172
  },
  "hsl": {
    "h": 223.077,
    "s": 51.542,
    "l": 44.51
  },
  "oklch": {
    "l": 0.48154,
    "c": 0.13978,
    "h": 265.4
  },
  "luminance": 0.1077
}

Semantic roles & 50–950 ramp

primary

#3758AC

secondary

#C2AE7D

accent

#B34DDB

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #3758AC

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

Preview Lab → · Contrast checker → · Palette generator →