#1B83A0#1B83A0

#1B83A0 is a mid, moderate cyan. Relative luminance 0.190; OKLCH L 56.8% C 0.098 H 222.2°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#1B83A0
RGB	rgb(27, 131, 160)
HSL	hsl(193, 71%, 37%)
HSV	hsv(193, 83%, 63%)
CMYK	cmyk(83.1%, 18.1%, 0%, 37.3%)
CIE-LAB	lab(50.69, -17.79, -23.48)
CIE-LCH	lch(50.69, 29.46, 232.86°)
OKLab	oklab(56.76% -0.0727 -0.0659)
OKLCH	oklch(56.76% 0.098 222.2)
XYZ	xyz(14.9108, 19.0018, 36.1327)
Luminance	0.1900 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B83A0 #A0381B

analogous

#1BA07B #1B83A0 #1B40A0

triadic

#1B83A0 #A01B83 #83A01B

tetradic

#1B83A0 #7B1BA0 #A0381B #40A01B

square

#1B83A0 #7B1BA0 #A0381B #40A01B

split-complementary

#1B83A0 #A01B40 #A07B1B

monochromatic

#092D37 #12586C #1B83A0 #24AED4 #53C3E2

Accessibility & contrast

On white

4.37

#1B83A0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#1B83A0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B83A0

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B83A0	#FFFFFF	#000000	##000000
##1B83A0	1.00	4.37	4.80	4.80
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7280A1

Deuteranopia (green-blind)

#6173A0

Tritanopia (blue-blind)

#008C8C

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #1b83a0;
/* rgb */ color: rgb(27, 131, 160);
/* oklch */ color: oklch(56.8% 0.098 222.2);

Tailwind

colors: {
  custom: {
    50: '#70a7bc',
    500: '#1b83a0',
    950: '#000000',
  },
}

SCSS

$custom: #1b83a0;
$custom-light: #70a7bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b83a0",
  "rgb": {
    "r": 27,
    "g": 131,
    "b": 160
  },
  "hsl": {
    "h": 193.083,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.56758,
    "c": 0.0981,
    "h": 222.2
  },
  "luminance": 0.19004
}

Semantic roles & 50–950 ramp

primary

#1B83A0

secondary

#C56B52

accent

#613AEE

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #1B83A0

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

Preview Lab → · Contrast checker → · Palette generator →