#3781AF#3781AF

#3781AF is a mid, moderate cyan. Relative luminance 0.196; OKLCH L 57.7% C 0.102 H 239.3°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#3781AF
RGB	rgb(55, 129, 175)
HSL	hsl(203, 52%, 45%)
HSV	hsv(203, 69%, 69%)
CMYK	cmyk(68.6%, 26.3%, 0%, 31.4%)
CIE-LAB	lab(51.39, -7.87, -31.03)
CIE-LCH	lch(51.39, 32.02, 255.77°)
OKLab	oklab(57.72% -0.0518 -0.0874)
OKLCH	oklch(57.72% 0.102 239.3)
XYZ	xyz(17.1607, 19.6060, 43.4291)
Luminance	0.1961 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3781AF #AF6537

analogous

#37AFA1 #3781AF #3745AF

triadic

#3781AF #AF3781 #81AF37

tetradic

#3781AF #A137AF #AF6537 #45AF37

square

#3781AF #A137AF #AF6537 #45AF37

split-complementary

#3781AF #AF3745 #AFA137

monochromatic

#1A3C52 #285F80 #3781AF #599FCB #87BAD9

Accessibility & contrast

On white

4.27

#3781AF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.92

#3781AF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3781AF

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3781AF	#FFFFFF	#000000	##000000
##3781AF	1.00	4.27	4.92	4.92
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.92	21.00	1.00	1.00
##000000	4.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C81B1

Deuteranopia (green-blind)

#5B75AE

Tritanopia (blue-blind)

#008D91

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3781af;
/* rgb */ color: rgb(55, 129, 175);
/* oklch */ color: oklch(57.7% 0.102 239.3);

Tailwind

colors: {
  custom: {
    50: '#7ca5c7',
    500: '#3781af',
    950: '#000000',
  },
}

SCSS

$custom: #3781af;
$custom-light: #7ca5c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3781af",
  "rgb": {
    "r": 55,
    "g": 129,
    "b": 175
  },
  "hsl": {
    "h": 203,
    "s": 52.174,
    "l": 45.098
  },
  "oklch": {
    "l": 0.57721,
    "c": 0.10161,
    "h": 239.3
  },
  "luminance": 0.19608
}

Semantic roles & 50–950 ramp

primary

#3781AF

secondary

#C3997F

accent

#834CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #3781AF

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

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