#1783B4#1783B4

#1783B4 is a mid, moderate cyan. Relative luminance 0.197; OKLCH L 57.7% C 0.116 H 235.2°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#1783B4
RGB	rgb(23, 131, 180)
HSL	hsl(199, 77%, 40%)
HSV	hsv(199, 87%, 71%)
CMYK	cmyk(87.2%, 27.2%, 0%, 29.4%)
CIE-LAB	lab(51.51, -10.90, -33.79)
CIE-LCH	lch(51.51, 35.50, 252.12°)
OKLab	oklab(57.68% -0.0665 -0.0956)
OKLCH	oklch(57.68% 0.116 235.2)
XYZ	xyz(16.7045, 19.7079, 46.0947)
Luminance	0.1971 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1783B4 #B44817

analogous

#17B497 #1783B4 #1735B4

triadic

#1783B4 #B41783 #83B417

tetradic

#1783B4 #9717B4 #B44817 #35B417

square

#1783B4 #9717B4 #B44817 #35B417

split-complementary

#1783B4 #B41735 #B49717

monochromatic

#093447 #105C7E #1783B4 #25A8E3 #5BBEEA

Accessibility & contrast

On white

4.25

#1783B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#1783B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1783B4

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1783B4	#FFFFFF	#000000	##000000
##1783B4	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B82B6

Deuteranopia (green-blind)

#5775B3

Tritanopia (blue-blind)

#009094

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #1783b4;
/* rgb */ color: rgb(23, 131, 180);
/* oklch */ color: oklch(57.7% 0.116 235.2);

Tailwind

colors: {
  custom: {
    50: '#73a7ca',
    500: '#1783b4',
    950: '#000000',
  },
}

SCSS

$custom: #1783b4;
$custom-light: #73a7ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1783b4",
  "rgb": {
    "r": 23,
    "g": 131,
    "b": 180
  },
  "hsl": {
    "h": 198.726,
    "s": 77.34,
    "l": 39.804
  },
  "oklch": {
    "l": 0.57683,
    "c": 0.11644,
    "h": 235.2
  },
  "luminance": 0.1971
}

Semantic roles & 50–950 ramp

primary

#1783B4

secondary

#CE7E59

accent

#7034F4

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #1783B4

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

Preview Lab → · Contrast checker → · Palette generator →