#3751BE#3751BE

#3751BE is a mid, vivid blue. Relative luminance 0.104; OKLCH L 48.1% C 0.174 H 268.8°. Best body text is #FFFFFF at 6.81:1 contrast (WCAG AA passes).

Color values

HEX	#3751BE
RGB	rgb(55, 81, 190)
HSL	hsl(228, 55%, 48%)
HSV	hsv(228, 71%, 75%)
CMYK	cmyk(71.1%, 57.4%, 0%, 25.5%)
CIE-LAB	lab(38.57, 27.62, -60.19)
CIE-LCH	lch(38.57, 66.23, 294.65°)
OKLab	oklab(48.1% -0.0037 -0.1735)
OKLCH	oklch(48.1% 0.174 268.8)
XYZ	xyz(13.8090, 10.4134, 49.9874)
Luminance	0.1042 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3751BE #BEA437

analogous

#3795BE #3751BE #6037BE

triadic

#3751BE #BE3751 #51BE37

tetradic

#3751BE #BE3795 #BEA437 #37BE60

square

#3751BE #BE3795 #BEA437 #37BE60

split-complementary

#3751BE #BE6037 #95BE37

monochromatic

#1C295F #293D8F #3751BE #6177D1 #90A0DF

Accessibility & contrast

On white

6.81

#3751BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#3751BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3751BE

6.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3751BE	#FFFFFF	#000000	##FFFFFF
##3751BE	1.00	6.81	3.08	6.81
#FFFFFF	6.81	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061C2

Deuteranopia (green-blind)

#0055BC

Tritanopia (blue-blind)

#006C7F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3751be;
/* rgb */ color: rgb(55, 81, 190);
/* oklch */ color: oklch(48.1% 0.174 268.8);

Tailwind

colors: {
  custom: {
    50: '#7f81d2',
    500: '#3751be',
    950: '#000000',
  },
}

SCSS

$custom: #3751be;
$custom-light: #7f81d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3751be",
  "rgb": {
    "r": 55,
    "g": 81,
    "b": 190
  },
  "hsl": {
    "h": 228.444,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.48095,
    "c": 0.17354,
    "h": 268.8
  },
  "luminance": 0.10415
}

Semantic roles & 50–950 ramp

primary

#3751BE

secondary

#CABD87

accent

#C249DE

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3751BE

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

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