#3781AE#3781AE

#3781AE is a mid, moderate cyan. Relative luminance 0.196; OKLCH L 57.7% C 0.101 H 238.7°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3781AE
RGB	rgb(55, 129, 174)
HSL	hsl(203, 52%, 45%)
HSV	hsv(203, 68%, 68%)
CMYK	cmyk(68.4%, 25.9%, 0%, 31.8%)
CIE-LAB	lab(51.34, -8.22, -30.53)
CIE-LCH	lch(51.34, 31.61, 254.94°)
OKLab	oklab(57.67% -0.0522 -0.0859)
OKLCH	oklch(57.67% 0.101 238.7)
XYZ	xyz(17.0628, 19.5669, 42.9137)
Luminance	0.1957 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3781AE #AE6437

analogous

#37AE9F #3781AE #3746AE

triadic

#3781AE #AE3781 #81AE37

tetradic

#3781AE #9F37AE #AE6437 #46AE37

square

#3781AE #9F37AE #AE6437 #46AE37

split-complementary

#3781AE #AE3746 #AE9F37

monochromatic

#1A3C51 #285F7F #3781AE #589FCA #86BAD9

Accessibility & contrast

On white

4.27

#3781AE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#3781AE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3781AE

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3781AE	#FFFFFF	#000000	##000000
##3781AE	1.00	4.27	4.91	4.91
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C81B0

Deuteranopia (green-blind)

#5C75AD

Tritanopia (blue-blind)

#008C90

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3781ae;
/* rgb */ color: rgb(55, 129, 174);
/* oklch */ color: oklch(57.7% 0.101 238.7);

Tailwind

colors: {
  custom: {
    50: '#7ba5c6',
    500: '#3781ae',
    950: '#000000',
  },
}

SCSS

$custom: #3781ae;
$custom-light: #7ba5c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3781ae",
  "rgb": {
    "r": 55,
    "g": 129,
    "b": 174
  },
  "hsl": {
    "h": 202.689,
    "s": 51.965,
    "l": 44.902
  },
  "oklch": {
    "l": 0.5767,
    "c": 0.10054,
    "h": 238.7
  },
  "luminance": 0.19569
}

Semantic roles & 50–950 ramp

primary

#3781AE

secondary

#C3987E

accent

#824CDB

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #3781AE

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

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