#3789B0#3789B0

#3789B0 is a mid, moderate cyan. Relative luminance 0.218; OKLCH L 59.7% C 0.098 H 232.5°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#3789B0
RGB	rgb(55, 137, 176)
HSL	hsl(199, 52%, 45%)
HSV	hsv(199, 69%, 69%)
CMYK	cmyk(68.8%, 22.2%, 0%, 31%)
CIE-LAB	lab(53.85, -12.08, -27.78)
CIE-LCH	lch(53.85, 30.29, 246.49°)
OKLab	oklab(59.69% -0.0598 -0.0779)
OKLCH	oklch(59.69% 0.098 232.5)
XYZ	xyz(18.3546, 21.8361, 44.3133)
Luminance	0.2184 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3789B0 #B05E37

analogous

#37B09A #3789B0 #374CB0

triadic

#3789B0 #B03789 #89B037

tetradic

#3789B0 #9A37B0 #B05E37 #4CB037

square

#3789B0 #9A37B0 #B05E37 #4CB037

split-complementary

#3789B0 #B0374C #B09A37

monochromatic

#1A4053 #286581 #3789B0 #59A6CB #88BFDA

Accessibility & contrast

On white

3.91

#3789B0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#3789B0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3789B0

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3789B0	#FFFFFF	#000000	##000000
##3789B0	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7687B2

Deuteranopia (green-blind)

#657BAF

Tritanopia (blue-blind)

#009396

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3789b0;
/* rgb */ color: rgb(55, 137, 176);
/* oklch */ color: oklch(59.7% 0.098 232.5);

Tailwind

colors: {
  custom: {
    50: '#7cabc7',
    500: '#3789b0',
    950: '#000000',
  },
}

SCSS

$custom: #3789b0;
$custom-light: #7cabc7;
$custom-dark: #000000;

JSON

{
  "hex": "#3789b0",
  "rgb": {
    "r": 55,
    "g": 137,
    "b": 176
  },
  "hsl": {
    "h": 199.339,
    "s": 52.381,
    "l": 45.294
  },
  "oklch": {
    "l": 0.59693,
    "c": 0.09825,
    "h": 232.5
  },
  "luminance": 0.21838
}

Semantic roles & 50–950 ramp

primary

#3789B0

secondary

#C4957F

accent

#7A4CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3789B0

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

Preview Lab → · Contrast checker → · Palette generator →