#3758A1#3758A1

#3758A1 is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.4% C 0.124 H 264.0°. Best body text is #FFFFFF at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#3758A1
RGB	rgb(55, 88, 161)
HSL	hsl(221, 49%, 42%)
HSV	hsv(221, 66%, 63%)
CMYK	cmyk(65.8%, 45.3%, 0%, 36.9%)
CIE-LAB	lab(38.49, 12.41, -43.20)
CIE-LCH	lch(38.49, 44.95, 286.03°)
OKLab	oklab(47.39% -0.013 -0.1234)
OKLCH	oklch(47.39% 0.124 264)
XYZ	xyz(11.4960, 10.3638, 35.1059)
Luminance	0.1037 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758A1 #A18037

analogous

#378DA1 #3758A1 #4B37A1

triadic

#3758A1 #A13758 #58A137

tetradic

#3758A1 #A1378D #A18037 #37A14B

square

#3758A1 #A1378D #A18037 #37A14B

split-complementary

#3758A1 #A14B37 #8DA137

monochromatic

#182646 #273F73 #3758A1 #5175C4 #7F99D3

Accessibility & contrast

On white

6.83

#3758A1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#3758A1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758A1

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758A1	#FFFFFF	#000000	##FFFFFF
##3758A1	1.00	6.83	3.07	6.83
#FFFFFF	6.83	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3560A4

Deuteranopia (green-blind)

#23569F

Tritanopia (blue-blind)

#006974

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3758a1;
/* rgb */ color: rgb(55, 88, 161);
/* oklch */ color: oklch(47.4% 0.124 264.0);

Tailwind

colors: {
  custom: {
    50: '#7986bd',
    500: '#3758a1',
    950: '#000000',
  },
}

SCSS

$custom: #3758a1;
$custom-light: #7986bd;
$custom-dark: #000000;

JSON

{
  "hex": "#3758a1",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 161
  },
  "hsl": {
    "h": 221.321,
    "s": 49.074,
    "l": 42.353
  },
  "oklch": {
    "l": 0.47392,
    "c": 0.12409,
    "h": 264
  },
  "luminance": 0.10365
}

Semantic roles & 50–950 ramp

primary

#3758A1

secondary

#BDA777

accent

#AE4FD9

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #3758A1

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

Preview Lab → · Contrast checker → · Palette generator →