#3780AD#3780AD

#3780AD is a mid, moderate cyan. Relative luminance 0.193; OKLCH L 57.4% C 0.100 H 239.0°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#3780AD
RGB	rgb(55, 128, 173)
HSL	hsl(203, 52%, 45%)
HSV	hsv(203, 68%, 68%)
CMYK	cmyk(68.2%, 26%, 0%, 32.2%)
CIE-LAB	lab(51.00, -7.98, -30.49)
CIE-LCH	lch(51.00, 31.52, 255.33°)
OKLab	oklab(57.38% -0.0515 -0.0858)
OKLCH	oklch(57.38% 0.1 239)
XYZ	xyz(16.8346, 19.2659, 42.3585)
Luminance	0.1927 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3780AD #AD6437

analogous

#37AD9F #3780AD #3745AD

triadic

#3780AD #AD3780 #80AD37

tetradic

#3780AD #9F37AD #AD6437 #45AD37

square

#3780AD #9F37AD #AD6437 #45AD37

split-complementary

#3780AD #AD3745 #AD9F37

monochromatic

#193B50 #285E7F #3780AD #579ECA #86B9D8

Accessibility & contrast

On white

4.33

#3780AD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#3780AD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3780AD

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3780AD	#FFFFFF	#000000	##000000
##3780AD	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B80AF

Deuteranopia (green-blind)

#5B74AC

Tritanopia (blue-blind)

#008B8F

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3780ad;
/* rgb */ color: rgb(55, 128, 173);
/* oklch */ color: oklch(57.4% 0.100 239.0);

Tailwind

colors: {
  custom: {
    50: '#7ba4c5',
    500: '#3780ad',
    950: '#000000',
  },
}

SCSS

$custom: #3780ad;
$custom-light: #7ba4c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3780ad",
  "rgb": {
    "r": 55,
    "g": 128,
    "b": 173
  },
  "hsl": {
    "h": 202.881,
    "s": 51.754,
    "l": 44.706
  },
  "oklch": {
    "l": 0.5738,
    "c": 0.10009,
    "h": 239
  },
  "luminance": 0.19268
}

Semantic roles & 50–950 ramp

primary

#3780AD

secondary

#C2987D

accent

#834DDB

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #3780AD

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

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