#3759DA#3759DA

#3759DA is a mid, highly saturated blue. Relative luminance 0.130; OKLCH L 51.9% C 0.201 H 267.5°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#3759DA
RGB	rgb(55, 89, 218)
HSL	hsl(227, 69%, 54%)
HSV	hsv(227, 75%, 85%)
CMYK	cmyk(74.8%, 59.2%, 0%, 14.5%)
CIE-LAB	lab(42.79, 32.66, -69.50)
CIE-LCH	lch(42.79, 76.79, 295.17°)
OKLab	oklab(51.92% -0.0089 -0.2007)
OKLCH	oklch(51.92% 0.201 267.5)
XYZ	xyz(17.7984, 13.0170, 67.8906)
Luminance	0.1302 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3759DA #DAB837

analogous

#37AADA #3759DA #6637DA

triadic

#3759DA #DA3759 #59DA37

tetradic

#3759DA #DA37AA #DAB837 #37DA66

square

#3759DA #DA37AA #DAB837 #37DA66

split-complementary

#3759DA #DA6637 #AADA37

monochromatic

#182D7F #213FB3 #3759DA #6B84E4 #9EAFED

Accessibility & contrast

On white

5.83

#3759DA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#3759DA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3759DA

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3759DA	#FFFFFF	#000000	##FFFFFF
##3759DA	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DDE

Deuteranopia (green-blind)

#005ED8

Tritanopia (blue-blind)

#007A91

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3759da;
/* rgb */ color: rgb(55, 89, 218);
/* oklch */ color: oklch(51.9% 0.201 267.5);

Tailwind

colors: {
  custom: {
    50: '#8587e6',
    500: '#3759da',
    950: '#000000',
  },
}

SCSS

$custom: #3759da;
$custom-light: #8587e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3759da",
  "rgb": {
    "r": 55,
    "g": 89,
    "b": 218
  },
  "hsl": {
    "h": 227.485,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.51921,
    "c": 0.20094,
    "h": 267.5
  },
  "luminance": 0.13019
}

Semantic roles & 50–950 ramp

primary

#3759DA

secondary

#D9CB93

accent

#C73CEC

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #3759DA

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

Preview Lab → · Contrast checker → · Palette generator →