#3750A8#3750A8

#3750A8 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.2% C 0.144 H 268.3°. Best body text is #FFFFFF at 7.30:1 contrast (WCAG AA passes).

Color values

HEX	#3750A8
RGB	rgb(55, 80, 168)
HSL	hsl(227, 51%, 44%)
HSV	hsv(227, 67%, 66%)
CMYK	cmyk(67.3%, 52.4%, 0%, 34.1%)
CIE-LAB	lab(36.70, 20.22, -50.25)
CIE-LCH	lch(36.70, 54.17, 291.92°)
OKLab	oklab(46.17% -0.0042 -0.1443)
OKLCH	oklch(46.17% 0.144 268.3)
XYZ	xyz(11.5097, 9.3756, 38.2413)
Luminance	0.0938 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3750A8 #A88F37

analogous

#3788A8 #3750A8 #5637A8

triadic

#3750A8 #A83750 #50A837

tetradic

#3750A8 #A83788 #A88F37 #37A856

square

#3750A8 #A83788 #A88F37 #37A856

split-complementary

#3750A8 #A85637 #88A837

monochromatic

#19244C #283A7A #3750A8 #556EC7 #8395D6

Accessibility & contrast

On white

7.30

#3750A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#3750A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3750A8

7.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3750A8	#FFFFFF	#000000	##FFFFFF
##3750A8	1.00	7.30	2.88	7.30
#FFFFFF	7.30	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A5CAB

Deuteranopia (green-blind)

#0051A6

Tritanopia (blue-blind)

#006574

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3750a8;
/* rgb */ color: rgb(55, 80, 168);
/* oklch */ color: oklch(46.2% 0.144 268.3);

Tailwind

colors: {
  custom: {
    50: '#7b80c2',
    500: '#3750a8',
    950: '#000000',
  },
}

SCSS

$custom: #3750a8;
$custom-light: #7b80c2;
$custom-dark: #000000;

JSON

{
  "hex": "#3750a8",
  "rgb": {
    "r": 55,
    "g": 80,
    "b": 168
  },
  "hsl": {
    "h": 226.726,
    "s": 50.673,
    "l": 43.725
  },
  "oklch": {
    "l": 0.46174,
    "c": 0.14433,
    "h": 268.3
  },
  "luminance": 0.09377
}

Semantic roles & 50–950 ramp

primary

#3750A8

secondary

#C0B17B

accent

#BB4EDA

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #3750A8

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

Preview Lab → · Contrast checker → · Palette generator →