#3750A3#3750A3

#3750A3 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 45.8% C 0.137 H 268.0°. Best body text is #FFFFFF at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#3750A3
RGB	rgb(55, 80, 163)
HSL	hsl(226, 50%, 43%)
HSV	hsv(226, 66%, 64%)
CMYK	cmyk(66.3%, 50.9%, 0%, 36.1%)
CIE-LAB	lab(36.35, 18.39, -47.82)
CIE-LCH	lch(36.35, 51.24, 291.04°)
OKLab	oklab(45.8% -0.0047 -0.1371)
OKLCH	oklch(45.8% 0.137 268)
XYZ	xyz(11.0528, 9.1929, 35.8352)
Luminance	0.0919 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3750A3 #A38A37

analogous

#3786A3 #3750A3 #5437A3

triadic

#3750A3 #A33750 #50A337

tetradic

#3750A3 #A33786 #A38A37 #37A354

square

#3750A3 #A33786 #A38A37 #37A354

split-complementary

#3750A3 #A35437 #86A337

monochromatic

#182347 #283A75 #3750A3 #526DC5 #8094D4

Accessibility & contrast

On white

7.40

#3750A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#3750A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3750A3

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3750A3	#FFFFFF	#000000	##FFFFFF
##3750A3	1.00	7.40	2.84	7.40
#FFFFFF	7.40	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#215BA6

Deuteranopia (green-blind)

#0051A1

Tritanopia (blue-blind)

#006372

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3750a3;
/* rgb */ color: rgb(55, 80, 163);
/* oklch */ color: oklch(45.8% 0.137 268.0);

Tailwind

colors: {
  custom: {
    50: '#7a80bf',
    500: '#3750a3',
    950: '#000000',
  },
}

SCSS

$custom: #3750a3;
$custom-light: #7a80bf;
$custom-dark: #000000;

JSON

{
  "hex": "#3750a3",
  "rgb": {
    "r": 55,
    "g": 80,
    "b": 163
  },
  "hsl": {
    "h": 226.111,
    "s": 49.541,
    "l": 42.745
  },
  "oklch": {
    "l": 0.45803,
    "c": 0.1372,
    "h": 268
  },
  "luminance": 0.09194
}

Semantic roles & 50–950 ramp

primary

#3750A3

secondary

#BEAE78

accent

#B94FD9

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #3750A3

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

Preview Lab → · Contrast checker → · Palette generator →