#3754CC#3754CC

#3754CC is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.8% C 0.189 H 268.3°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#3754CC
RGB	rgb(55, 84, 204)
HSL	hsl(228, 59%, 51%)
HSV	hsv(228, 73%, 80%)
CMYK	cmyk(73%, 58.8%, 0%, 20%)
CIE-LAB	lab(40.43, 30.77, -65.31)
CIE-LCH	lch(40.43, 72.20, 295.23°)
OKLab	oklab(49.82% -0.0057 -0.1885)
OKLCH	oklch(49.82% 0.189 268.3)
XYZ	xyz(15.6412, 11.5109, 58.5125)
Luminance	0.1151 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3754CC #CCAF37

analogous

#379ECC #3754CC #6437CC

triadic

#3754CC #CC3754 #54CC37

tetradic

#3754CC #CC379E #CCAF37 #37CC64

square

#3754CC #CC379E #CCAF37 #37CC64

split-complementary

#3754CC #CC6437 #9ECC37

monochromatic

#1C2C6D #283F9E #3754CC #687ED8 #99A7E5

Accessibility & contrast

On white

6.36

#3754CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#3754CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3754CC

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3754CC	#FFFFFF	#000000	##FFFFFF
##3754CC	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066D0

Deuteranopia (green-blind)

#0059CA

Tritanopia (blue-blind)

#007288

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3754cc;
/* rgb */ color: rgb(55, 84, 204);
/* oklch */ color: oklch(49.8% 0.189 268.3);

Tailwind

colors: {
  custom: {
    50: '#8283dc',
    500: '#3754cc',
    950: '#000000',
  },
}

SCSS

$custom: #3754cc;
$custom-light: #8283dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3754cc",
  "rgb": {
    "r": 55,
    "g": 84,
    "b": 204
  },
  "hsl": {
    "h": 228.322,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.49819,
    "c": 0.18858,
    "h": 268.3
  },
  "luminance": 0.11513
}

Semantic roles & 50–950 ramp

primary

#3754CC

secondary

#D0C48E

accent

#C445E3

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3754CC

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

Preview Lab → · Contrast checker → · Palette generator →