#3758CA#3758CA

#3758CA is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.4% C 0.181 H 267.3°. Best body text is #FFFFFF at 6.16:1 contrast (WCAG AA passes).

Color values

HEX	#3758CA
RGB	rgb(55, 88, 202)
HSL	hsl(227, 58%, 50%)
HSV	hsv(227, 73%, 79%)
CMYK	cmyk(72.8%, 56.4%, 0%, 20.8%)
CIE-LAB	lab(41.30, 27.48, -62.73)
CIE-LCH	lch(41.30, 68.49, 293.65°)
OKLab	oklab(50.42% -0.0086 -0.1809)
OKLCH	oklch(50.42% 0.181 267.3)
XYZ	xyz(15.7222, 12.0543, 57.3638)
Luminance	0.1206 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758CA #CAA937

analogous

#37A1CA #3758CA #6037CA

triadic

#3758CA #CA3758 #58CA37

tetradic

#3758CA #CA37A1 #CAA937 #37CA60

square

#3758CA #CA37A1 #CAA937 #37CA60

split-complementary

#3758CA #CA6037 #A1CA37

monochromatic

#1C2E6A #29439B #3758CA #6780D7 #98A9E4

Accessibility & contrast

On white

6.16

#3758CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#3758CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758CA

6.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758CA	#FFFFFF	#000000	##FFFFFF
##3758CA	1.00	6.16	3.41	6.16
#FFFFFF	6.16	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CE

Deuteranopia (green-blind)

#005BC8

Tritanopia (blue-blind)

#007488

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #3758ca;
/* rgb */ color: rgb(55, 88, 202);
/* oklch */ color: oklch(50.4% 0.181 267.3);

Tailwind

colors: {
  custom: {
    50: '#8186db',
    500: '#3758ca',
    950: '#000000',
  },
}

SCSS

$custom: #3758ca;
$custom-light: #8186db;
$custom-dark: #000000;

JSON

{
  "hex": "#3758ca",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 202
  },
  "hsl": {
    "h": 226.531,
    "s": 58.103,
    "l": 50.392
  },
  "oklch": {
    "l": 0.50424,
    "c": 0.18108,
    "h": 267.3
  },
  "luminance": 0.12056
}

Semantic roles & 50–950 ramp

primary

#3758CA

secondary

#CFC08E

accent

#BF46E1

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3758CA

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

Preview Lab → · Contrast checker → · Palette generator →