#3756D9#3756D9

#3756D9 is a mid, highly saturated blue. Relative luminance 0.125; OKLCH L 51.3% C 0.203 H 268.0°. Best body text is #FFFFFF at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#3756D9
RGB	rgb(55, 86, 217)
HSL	hsl(229, 68%, 53%)
HSV	hsv(229, 75%, 85%)
CMYK	cmyk(74.7%, 60.4%, 0%, 14.9%)
CIE-LAB	lab(41.96, 34.19, -70.28)
CIE-LCH	lch(41.96, 78.16, 295.95°)
OKLab	oklab(51.28% -0.0069 -0.2031)
OKLCH	oklch(51.28% 0.203 268)
XYZ	xyz(17.4234, 12.4757, 67.1220)
Luminance	0.1248 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3756D9 #D9BA37

analogous

#37A7D9 #3756D9 #6937D9

triadic

#3756D9 #D93756 #56D937

tetradic

#3756D9 #D937A7 #D9BA37 #37D969

square

#3756D9 #D937A7 #D9BA37 #37D969

split-complementary

#3756D9 #D96937 #A7D937

monochromatic

#182B7E #223DB1 #3756D9 #6A81E3 #9EADED

Accessibility & contrast

On white

6.01

#3756D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#3756D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3756D9

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3756D9	#FFFFFF	#000000	##FFFFFF
##3756D9	1.00	6.01	3.50	6.01
#FFFFFF	6.01	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	6.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BDD

Deuteranopia (green-blind)

#005CD6

Tritanopia (blue-blind)

#00778F

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3756d9;
/* rgb */ color: rgb(55, 86, 217);
/* oklch */ color: oklch(51.3% 0.203 268.0);

Tailwind

colors: {
  custom: {
    50: '#8585e6',
    500: '#3756d9',
    950: '#000000',
  },
}

SCSS

$custom: #3756d9;
$custom-light: #8585e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3756d9",
  "rgb": {
    "r": 55,
    "g": 86,
    "b": 217
  },
  "hsl": {
    "h": 228.519,
    "s": 68.067,
    "l": 53.333
  },
  "oklch": {
    "l": 0.51282,
    "c": 0.20318,
    "h": 268
  },
  "luminance": 0.12478
}

Semantic roles & 50–950 ramp

primary

#3756D9

secondary

#D9CB93

accent

#CA3DEB

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #3756D9

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

Preview Lab → · Contrast checker → · Palette generator →