#3754BC#3754BC

#3754BC is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.5% C 0.167 H 267.9°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#3754BC
RGB	rgb(55, 84, 188)
HSL	hsl(227, 55%, 48%)
HSV	hsv(227, 71%, 74%)
CMYK	cmyk(70.7%, 55.3%, 0%, 26.3%)
CIE-LAB	lab(39.21, 24.94, -57.99)
CIE-LCH	lch(39.21, 63.13, 293.27°)
OKLab	oklab(48.53% -0.0062 -0.167)
OKLCH	oklch(48.53% 0.167 267.9)
XYZ	xyz(13.8198, 10.7823, 48.9201)
Luminance	0.1078 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3754BC #BC9F37

analogous

#3797BC #3754BC #5C37BC

triadic

#3754BC #BC3754 #54BC37

tetradic

#3754BC #BC3797 #BC9F37 #37BC5C

square

#3754BC #BC3797 #BC9F37 #37BC5C

split-complementary

#3754BC #BC5C37 #97BC37

monochromatic

#1B2A5D #293F8D #3754BC #6078D0 #8FA0DE

Accessibility & contrast

On white

6.65

#3754BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#3754BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3754BC

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3754BC	#FFFFFF	#000000	##FFFFFF
##3754BC	1.00	6.65	3.16	6.65
#FFFFFF	6.65	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C0

Deuteranopia (green-blind)

#0056BA

Tritanopia (blue-blind)

#006D80

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3754bc;
/* rgb */ color: rgb(55, 84, 188);
/* oklch */ color: oklch(48.5% 0.167 267.9);

Tailwind

colors: {
  custom: {
    50: '#7f83d1',
    500: '#3754bc',
    950: '#000000',
  },
}

SCSS

$custom: #3754bc;
$custom-light: #7f83d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3754bc",
  "rgb": {
    "r": 55,
    "g": 84,
    "b": 188
  },
  "hsl": {
    "h": 226.917,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.48526,
    "c": 0.1671,
    "h": 267.9
  },
  "luminance": 0.10784
}

Semantic roles & 50–950 ramp

primary

#3754BC

secondary

#C9BA86

accent

#BE4ADE

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3754BC

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

Preview Lab → · Contrast checker → · Palette generator →