#3751DA#3751DA

#3751DA is a mid, highly saturated blue. Relative luminance 0.118; OKLCH L 50.5% C 0.210 H 269.0°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#3751DA
RGB	rgb(55, 81, 218)
HSL	hsl(230, 69%, 54%)
HSV	hsv(230, 75%, 85%)
CMYK	cmyk(74.8%, 62.8%, 0%, 14.5%)
CIE-LAB	lab(40.83, 37.69, -72.71)
CIE-LCH	lch(40.83, 81.90, 297.40°)
OKLab	oklab(50.47% -0.0038 -0.2102)
OKLCH	oklch(50.47% 0.21 269)
XYZ	xyz(17.1685, 11.7572, 67.6806)
Luminance	0.1176 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3751DA #DAC037

analogous

#37A3DA #3751DA #6E37DA

triadic

#3751DA #DA3751 #51DA37

tetradic

#3751DA #DA37A3 #DAC037 #37DA6E

square

#3751DA #DA37A3 #DAC037 #37DA6E

split-complementary

#3751DA #DA6E37 #A3DA37

monochromatic

#18287F #2138B3 #3751DA #6B7EE4 #9EABED

Accessibility & contrast

On white

6.27

#3751DA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#3751DA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3751DA

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3751DA	#FFFFFF	#000000	##FFFFFF
##3751DA	1.00	6.27	3.35	6.27
#FFFFFF	6.27	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068DE

Deuteranopia (green-blind)

#0059D7

Tritanopia (blue-blind)

#00758E

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3751da;
/* rgb */ color: rgb(55, 81, 218);
/* oklch */ color: oklch(50.5% 0.210 269.0);

Tailwind

colors: {
  custom: {
    50: '#8581e7',
    500: '#3751da',
    950: '#000000',
  },
}

SCSS

$custom: #3751da;
$custom-light: #8581e7;
$custom-dark: #000000;

JSON

{
  "hex": "#3751da",
  "rgb": {
    "r": 55,
    "g": 81,
    "b": 218
  },
  "hsl": {
    "h": 230.429,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.50468,
    "c": 0.21025,
    "h": 269
  },
  "luminance": 0.11759
}

Semantic roles & 50–950 ramp

primary

#3751DA

secondary

#D9CE93

accent

#D03CEC

background

#F9F7FE

surface

#F1EEFD

border

#CBC9D5

text

#0D0A16

muted

#7E7C84

Preview Lab

Preview with #3751DA

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

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