#3781AC#3781AC

#3781AC is a mid, moderate cyan. Relative luminance 0.195; OKLCH L 57.6% C 0.098 H 237.5°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#3781AC
RGB	rgb(55, 129, 172)
HSL	hsl(202, 52%, 45%)
HSV	hsv(202, 68%, 67%)
CMYK	cmyk(68%, 25%, 0%, 32.5%)
CIE-LAB	lab(51.26, -8.90, -29.51)
CIE-LCH	lch(51.26, 30.82, 253.21°)
OKLab	oklab(57.57% -0.0529 -0.083)
OKLCH	oklch(57.57% 0.098 237.5)
XYZ	xyz(16.8693, 19.4895, 41.8945)
Luminance	0.1949 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3781AC #AC6237

analogous

#37AC9D #3781AC #3747AC

triadic

#3781AC #AC3781 #81AC37

tetradic

#3781AC #9D37AC #AC6237 #47AC37

square

#3781AC #9D37AC #AC6237 #47AC37

split-complementary

#3781AC #AC3747 #AC9D37

monochromatic

#193B4F #285E7E #3781AC #579FC9 #85BAD8

Accessibility & contrast

On white

4.29

#3781AC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.90

#3781AC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3781AC

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3781AC	#FFFFFF	#000000	##000000
##3781AC	1.00	4.29	4.90	4.90
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.90	21.00	1.00	1.00
##000000	4.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D81AE

Deuteranopia (green-blind)

#5D75AB

Tritanopia (blue-blind)

#008C90

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3781ac;
/* rgb */ color: rgb(55, 129, 172);
/* oklch */ color: oklch(57.6% 0.098 237.5);

Tailwind

colors: {
  custom: {
    50: '#7ba5c5',
    500: '#3781ac',
    950: '#000000',
  },
}

SCSS

$custom: #3781ac;
$custom-light: #7ba5c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3781ac",
  "rgb": {
    "r": 55,
    "g": 129,
    "b": 172
  },
  "hsl": {
    "h": 202.051,
    "s": 51.542,
    "l": 44.51
  },
  "oklch": {
    "l": 0.5757,
    "c": 0.09841,
    "h": 237.5
  },
  "luminance": 0.19491
}

Semantic roles & 50–950 ramp

primary

#3781AC

secondary

#C2967D

accent

#814DDB

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #3781AC

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

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