#3780AF#3780AF

#3780AF is a mid, moderate cyan. Relative luminance 0.193; OKLCH L 57.5% C 0.102 H 240.2°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#3780AF
RGB	rgb(55, 128, 175)
HSL	hsl(204, 52%, 45%)
HSV	hsv(204, 69%, 69%)
CMYK	cmyk(68.6%, 26.9%, 0%, 31.4%)
CIE-LAB	lab(51.09, -7.29, -31.50)
CIE-LCH	lch(51.09, 32.34, 256.97°)
OKLab	oklab(57.48% -0.0508 -0.0888)
OKLCH	oklch(57.48% 0.102 240.2)
XYZ	xyz(17.0296, 19.3439, 43.3854)
Luminance	0.1935 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3780AF #AF6637

analogous

#37AFA2 #3780AF #3744AF

triadic

#3780AF #AF3780 #80AF37

tetradic

#3780AF #A237AF #AF6637 #44AF37

square

#3780AF #A237AF #AF6637 #44AF37

split-complementary

#3780AF #AF3744 #AFA237

monochromatic

#1A3C52 #285E80 #3780AF #599ECB #87B9D9

Accessibility & contrast

On white

4.31

#3780AF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#3780AF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3780AF

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3780AF	#FFFFFF	#000000	##000000
##3780AF	1.00	4.31	4.87	4.87
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A80B1

Deuteranopia (green-blind)

#5A74AE

Tritanopia (blue-blind)

#008C90

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3780af;
/* rgb */ color: rgb(55, 128, 175);
/* oklch */ color: oklch(57.5% 0.102 240.2);

Tailwind

colors: {
  custom: {
    50: '#7ca4c7',
    500: '#3780af',
    950: '#000000',
  },
}

SCSS

$custom: #3780af;
$custom-light: #7ca4c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3780af",
  "rgb": {
    "r": 55,
    "g": 128,
    "b": 175
  },
  "hsl": {
    "h": 203.5,
    "s": 52.174,
    "l": 45.098
  },
  "oklch": {
    "l": 0.57481,
    "c": 0.10228,
    "h": 240.2
  },
  "luminance": 0.19346
}

Semantic roles & 50–950 ramp

primary

#3780AF

secondary

#C3997F

accent

#844CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #3780AF

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

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