#3759CC#3759CC

#3759CC is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.8% C 0.183 H 267.1°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#3759CC
RGB	rgb(55, 89, 204)
HSL	hsl(226, 59%, 51%)
HSV	hsv(226, 73%, 80%)
CMYK	cmyk(73%, 56.4%, 0%, 20%)
CIE-LAB	lab(41.71, 27.57, -63.22)
CIE-LCH	lch(41.71, 68.97, 293.56°)
OKLab	oklab(50.78% -0.0093 -0.1823)
OKLCH	oklch(50.78% 0.183 267.1)
XYZ	xyz(16.0432, 12.3149, 58.6465)
Luminance	0.1232 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3759CC #CCAA37

analogous

#37A3CC #3759CC #5F37CC

triadic

#3759CC #CC3759 #59CC37

tetradic

#3759CC #CC37A3 #CCAA37 #37CC5F

square

#3759CC #CC37A3 #CCAA37 #37CC5F

split-complementary

#3759CC #CC5F37 #A3CC37

monochromatic

#1C2E6D #28439E #3759CC #6881D8 #99AAE5

Accessibility & contrast

On white

6.06

#3759CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#3759CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3759CC

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3759CC	#FFFFFF	#000000	##FFFFFF
##3759CC	1.00	6.06	3.46	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AD0

Deuteranopia (green-blind)

#005CCA

Tritanopia (blue-blind)

#00758A

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3759cc;
/* rgb */ color: rgb(55, 89, 204);
/* oklch */ color: oklch(50.8% 0.183 267.1);

Tailwind

colors: {
  custom: {
    50: '#8287dc',
    500: '#3759cc',
    950: '#000000',
  },
}

SCSS

$custom: #3759cc;
$custom-light: #8287dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3759cc",
  "rgb": {
    "r": 55,
    "g": 89,
    "b": 204
  },
  "hsl": {
    "h": 226.309,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.50779,
    "c": 0.18253,
    "h": 267.1
  },
  "luminance": 0.12317
}

Semantic roles & 50–950 ramp

primary

#3759CC

secondary

#D0C18E

accent

#BF45E3

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3759CC

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

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