#3750BD#3750BD

#3750BD is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.8% C 0.173 H 269.0°. Best body text is #FFFFFF at 6.90:1 contrast (WCAG AA passes).

Color values

HEX	#3750BD
RGB	rgb(55, 80, 189)
HSL	hsl(229, 55%, 48%)
HSV	hsv(229, 71%, 74%)
CMYK	cmyk(70.9%, 57.7%, 0%, 25.9%)
CIE-LAB	lab(38.24, 27.90, -60.15)
CIE-LCH	lch(38.24, 66.31, 294.88°)
OKLab	oklab(47.82% -0.003 -0.1734)
OKLCH	oklch(47.82% 0.173 269)
XYZ	xyz(13.6264, 10.2223, 49.3892)
Luminance	0.1022 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3750BD #BDA437

analogous

#3793BD #3750BD #6137BD

triadic

#3750BD #BD3750 #50BD37

tetradic

#3750BD #BD3793 #BDA437 #37BD61

square

#3750BD #BD3793 #BDA437 #37BD61

split-complementary

#3750BD #BD6137 #93BD37

monochromatic

#1B285E #293C8E #3750BD #6075D1 #909EDF

Accessibility & contrast

On white

6.90

#3750BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#3750BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3750BD

6.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3750BD	#FFFFFF	#000000	##FFFFFF
##3750BD	1.00	6.90	3.04	6.90
#FFFFFF	6.90	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060C1

Deuteranopia (green-blind)

#0054BB

Tritanopia (blue-blind)

#006B7E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3750bd;
/* rgb */ color: rgb(55, 80, 189);
/* oklch */ color: oklch(47.8% 0.173 269.0);

Tailwind

colors: {
  custom: {
    50: '#7f80d2',
    500: '#3750bd',
    950: '#000000',
  },
}

SCSS

$custom: #3750bd;
$custom-light: #7f80d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3750bd",
  "rgb": {
    "r": 55,
    "g": 80,
    "b": 189
  },
  "hsl": {
    "h": 228.806,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.4782,
    "c": 0.17343,
    "h": 269
  },
  "luminance": 0.10224
}

Semantic roles & 50–950 ramp

primary

#3750BD

secondary

#C9BD86

accent

#C34ADE

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3750BD

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

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