#3758A5#3758A5

#3758A5 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.7% C 0.130 H 264.5°. Best body text is #FFFFFF at 6.77:1 contrast (WCAG AA passes).

Color values

HEX	#3758A5
RGB	rgb(55, 88, 165)
HSL	hsl(222, 50%, 43%)
HSV	hsv(222, 67%, 65%)
CMYK	cmyk(66.7%, 46.7%, 0%, 35.3%)
CIE-LAB	lab(38.74, 13.88, -45.18)
CIE-LCH	lch(38.74, 47.26, 287.07°)
OKLab	oklab(47.66% -0.0123 -0.1292)
OKLCH	oklch(47.66% 0.13 264.5)
XYZ	xyz(11.8544, 10.5072, 36.9934)
Luminance	0.1051 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758A5 #A58437

analogous

#378FA5 #3758A5 #4D37A5

triadic

#3758A5 #A53758 #58A537

tetradic

#3758A5 #A5378F #A58437 #37A54D

square

#3758A5 #A5378F #A58437 #37A54D

split-complementary

#3758A5 #A54D37 #8FA537

monochromatic

#182749 #284077 #3758A5 #5376C6 #819AD5

Accessibility & contrast

On white

6.77

#3758A5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#3758A5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758A5

6.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758A5	#FFFFFF	#000000	##FFFFFF
##3758A5	1.00	6.77	3.10	6.77
#FFFFFF	6.77	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3261A8

Deuteranopia (green-blind)

#1D56A3

Tritanopia (blue-blind)

#006A76

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3758a5;
/* rgb */ color: rgb(55, 88, 165);
/* oklch */ color: oklch(47.7% 0.130 264.5);

Tailwind

colors: {
  custom: {
    50: '#7a86c0',
    500: '#3758a5',
    950: '#000000',
  },
}

SCSS

$custom: #3758a5;
$custom-light: #7a86c0;
$custom-dark: #000000;

JSON

{
  "hex": "#3758a5",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 165
  },
  "hsl": {
    "h": 222,
    "s": 50,
    "l": 43.137
  },
  "oklch": {
    "l": 0.47664,
    "c": 0.12982,
    "h": 264.5
  },
  "luminance": 0.10508
}

Semantic roles & 50–950 ramp

primary

#3758A5

secondary

#BFAA79

accent

#B04EDA

background

#F7F8FB

surface

#EEEFF7

border

#C9CAD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #3758A5

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

Preview Lab → · Contrast checker → · Palette generator →