#3758C7#3758C7

#3758C7 is a mid, vivid blue. Relative luminance 0.119; OKLCH L 50.2% C 0.177 H 267.2°. Best body text is #FFFFFF at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#3758C7
RGB	rgb(55, 88, 199)
HSL	hsl(226, 57%, 50%)
HSV	hsv(226, 72%, 78%)
CMYK	cmyk(72.4%, 55.8%, 0%, 22%)
CIE-LAB	lab(41.08, 26.38, -61.36)
CIE-LCH	lch(41.08, 66.79, 293.26°)
OKLab	oklab(50.19% -0.0088 -0.1768)
OKLCH	oklch(50.19% 0.177 267.2)
XYZ	xyz(15.3705, 11.9136, 55.5113)
Luminance	0.1192 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758C7 #C7A637

analogous

#37A0C7 #3758C7 #5E37C7

triadic

#3758C7 #C73758 #58C737

tetradic

#3758C7 #C737A0 #C7A637 #37C75E

square

#3758C7 #C737A0 #C7A637 #37C75E

split-complementary

#3758C7 #C75E37 #A0C737

monochromatic

#1C2E67 #2A4397 #3758C7 #6680D5 #96A8E2

Accessibility & contrast

On white

6.21

#3758C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#3758C7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758C7

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758C7	#FFFFFF	#000000	##FFFFFF
##3758C7	1.00	6.21	3.38	6.21
#FFFFFF	6.21	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CB

Deuteranopia (green-blind)

#005AC5

Tritanopia (blue-blind)

#007387

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #3758c7;
/* rgb */ color: rgb(55, 88, 199);
/* oklch */ color: oklch(50.2% 0.177 267.2);

Tailwind

colors: {
  custom: {
    50: '#8186d9',
    500: '#3758c7',
    950: '#000000',
  },
}

SCSS

$custom: #3758c7;
$custom-light: #8186d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3758c7",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 199
  },
  "hsl": {
    "h": 226.25,
    "s": 56.693,
    "l": 49.804
  },
  "oklch": {
    "l": 0.50186,
    "c": 0.17706,
    "h": 267.2
  },
  "luminance": 0.11915
}

Semantic roles & 50–950 ramp

primary

#3758C7

secondary

#CDBF8C

accent

#BD48E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3758C7

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

Preview Lab → · Contrast checker → · Palette generator →