#1B83A1#1B83A1

#1B83A1 is a mid, moderate cyan. Relative luminance 0.190; OKLCH L 56.8% C 0.099 H 223.0°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#1B83A1
RGB	rgb(27, 131, 161)
HSL	hsl(193, 71%, 37%)
HSV	hsv(193, 83%, 63%)
CMYK	cmyk(83.2%, 18.6%, 0%, 36.9%)
CIE-LAB	lab(50.73, -17.44, -24.00)
CIE-LCH	lch(50.73, 29.67, 234.00°)
OKLab	oklab(56.81% -0.0723 -0.0673)
OKLCH	oklch(56.81% 0.099 223)
XYZ	xyz(14.9986, 19.0369, 36.5953)
Luminance	0.1904 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B83A1 #A1391B

analogous

#1BA17C #1B83A1 #1B40A1

triadic

#1B83A1 #A11B83 #83A11B

tetradic

#1B83A1 #7C1BA1 #A1391B #40A11B

square

#1B83A1 #7C1BA1 #A1391B #40A11B

split-complementary

#1B83A1 #A11B40 #A17C1B

monochromatic

#092E38 #12586D #1B83A1 #24AED5 #54C2E2

Accessibility & contrast

On white

4.37

#1B83A1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#1B83A1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B83A1

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B83A1	#FFFFFF	#000000	##000000
##1B83A1	1.00	4.37	4.81	4.81
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7280A3

Deuteranopia (green-blind)

#6073A1

Tritanopia (blue-blind)

#008C8D

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #1b83a1;
/* rgb */ color: rgb(27, 131, 161);
/* oklch */ color: oklch(56.8% 0.099 223.0);

Tailwind

colors: {
  custom: {
    50: '#70a7bd',
    500: '#1b83a1',
    950: '#000000',
  },
}

SCSS

$custom: #1b83a1;
$custom-light: #70a7bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b83a1",
  "rgb": {
    "r": 27,
    "g": 131,
    "b": 161
  },
  "hsl": {
    "h": 193.433,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.56805,
    "c": 0.09881,
    "h": 223
  },
  "luminance": 0.19039
}

Semantic roles & 50–950 ramp

primary

#1B83A1

secondary

#C56C52

accent

#623AEE

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #1B83A1

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

Preview Lab → · Contrast checker → · Palette generator →