#3758AD#3758AD

#3758AD is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.2% C 0.141 H 265.5°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#3758AD
RGB	rgb(55, 88, 173)
HSL	hsl(223, 52%, 45%)
HSV	hsv(223, 68%, 68%)
CMYK	cmyk(68.2%, 49.1%, 0%, 32.2%)
CIE-LAB	lab(39.25, 16.82, -49.10)
CIE-LCH	lch(39.25, 51.90, 288.91°)
OKLab	oklab(48.23% -0.0112 -0.1407)
OKLCH	oklch(48.23% 0.141 265.5)
XYZ	xyz(12.6055, 10.8076, 40.9488)
Luminance	0.1081 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758AD #AD8C37

analogous

#3793AD #3758AD #5137AD

triadic

#3758AD #AD3758 #58AD37

tetradic

#3758AD #AD3793 #AD8C37 #37AD51

square

#3758AD #AD3793 #AD8C37 #37AD51

split-complementary

#3758AD #AD5137 #93AD37

monochromatic

#192950 #28407F #3758AD #5777CA #869DD8

Accessibility & contrast

On white

6.64

#3758AD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#3758AD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758AD

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758AD	#FFFFFF	#000000	##FFFFFF
##3758AD	1.00	6.64	3.16	6.64
#FFFFFF	6.64	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A62B0

Deuteranopia (green-blind)

#0957AB

Tritanopia (blue-blind)

#006C7A

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3758ad;
/* rgb */ color: rgb(55, 88, 173);
/* oklch */ color: oklch(48.2% 0.141 265.5);

Tailwind

colors: {
  custom: {
    50: '#7b86c6',
    500: '#3758ad',
    950: '#000000',
  },
}

SCSS

$custom: #3758ad;
$custom-light: #7b86c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3758ad",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 173
  },
  "hsl": {
    "h": 223.22,
    "s": 51.754,
    "l": 44.706
  },
  "oklch": {
    "l": 0.48226,
    "c": 0.14119,
    "h": 265.5
  },
  "luminance": 0.10809
}

Semantic roles & 50–950 ramp

primary

#3758AD

secondary

#C2AF7D

accent

#B34DDB

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #3758AD

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

Preview Lab → · Contrast checker → · Palette generator →