#3758DA#3758DA

#3758DA is a mid, highly saturated blue. Relative luminance 0.129; OKLCH L 51.7% C 0.202 H 267.7°. Best body text is #FFFFFF at 5.88:1 contrast (WCAG AA passes).

Color values

HEX	#3758DA
RGB	rgb(55, 88, 218)
HSL	hsl(228, 69%, 54%)
HSV	hsv(228, 75%, 85%)
CMYK	cmyk(74.8%, 59.6%, 0%, 14.5%)
CIE-LAB	lab(42.54, 33.29, -69.91)
CIE-LCH	lch(42.54, 77.43, 295.46°)
OKLab	oklab(51.74% -0.0082 -0.2019)
OKLCH	oklch(51.74% 0.202 267.7)
XYZ	xyz(17.7158, 12.8517, 67.8630)
Luminance	0.1285 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758DA #DAB937

analogous

#37A9DA #3758DA #6737DA

triadic

#3758DA #DA3758 #58DA37

tetradic

#3758DA #DA37A9 #DAB937 #37DA67

square

#3758DA #DA37A9 #DAB937 #37DA67

split-complementary

#3758DA #DA6737 #A9DA37

monochromatic

#182C7F #213FB3 #3758DA #6B83E4 #9EAEED

Accessibility & contrast

On white

5.88

#3758DA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#3758DA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758DA

5.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758DA	#FFFFFF	#000000	##FFFFFF
##3758DA	1.00	5.88	3.57	5.88
#FFFFFF	5.88	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CDE

Deuteranopia (green-blind)

#005DD7

Tritanopia (blue-blind)

#007990

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #3758da;
/* rgb */ color: rgb(55, 88, 218);
/* oklch */ color: oklch(51.7% 0.202 267.7);

Tailwind

colors: {
  custom: {
    50: '#8586e6',
    500: '#3758da',
    950: '#000000',
  },
}

SCSS

$custom: #3758da;
$custom-light: #8586e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3758da",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 218
  },
  "hsl": {
    "h": 227.853,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.51735,
    "c": 0.20212,
    "h": 267.7
  },
  "luminance": 0.12854
}

Semantic roles & 50–950 ramp

primary

#3758DA

secondary

#D9CB93

accent

#C83CEC

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #3758DA

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

Preview Lab → · Contrast checker → · Palette generator →