#1B6583#1B6583

#1B6583 is a mid, moderate cyan. Relative luminance 0.112; OKLCH L 47.7% C 0.084 H 230.0°. Best body text is #FFFFFF at 6.49:1 contrast (WCAG AA passes).

Color values

HEX	#1B6583
RGB	rgb(27, 101, 131)
HSL	hsl(197, 66%, 31%)
HSV	hsv(197, 79%, 51%)
CMYK	cmyk(79.4%, 22.9%, 0%, 48.6%)
CIE-LAB	lab(39.88, -11.28, -23.01)
CIE-LCH	lch(39.88, 25.63, 243.89°)
OKLab	oklab(47.68% -0.0542 -0.0647)
OKLCH	oklch(47.68% 0.084 230)
XYZ	xyz(9.2007, 11.1780, 23.1410)
Luminance	0.1118 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B6583 #83391B

analogous

#1B836D #1B6583 #1B3183

triadic

#1B6583 #831B65 #65831B

tetradic

#1B6583 #6D1B83 #83391B #31831B

square

#1B6583 #6D1B83 #83391B #31831B

split-complementary

#1B6583 #831B31 #836D1B

monochromatic

#06171E #113E50 #1B6583 #258CB6 #41ACD8

Accessibility & contrast

On white

6.49

#1B6583 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#1B6583 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B6583

6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B6583	#FFFFFF	#000000	##FFFFFF
##1B6583	1.00	6.49	3.24	6.49
#FFFFFF	6.49	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#566384

Deuteranopia (green-blind)

#485A83

Tritanopia (blue-blind)

#006D6F

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #1b6583;
/* rgb */ color: rgb(27, 101, 131);
/* oklch */ color: oklch(47.7% 0.084 230.0);

Tailwind

colors: {
  custom: {
    50: '#6991a7',
    500: '#1b6583',
    950: '#000000',
  },
}

SCSS

$custom: #1b6583;
$custom-light: #6991a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b6583",
  "rgb": {
    "r": 27,
    "g": 101,
    "b": 131
  },
  "hsl": {
    "h": 197.308,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.47684,
    "c": 0.08442,
    "h": 230
  },
  "luminance": 0.11179
}

Semantic roles & 50–950 ramp

primary

#1B6583

secondary

#B66543

accent

#703FE9

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#070C0F

muted

#7A7D7F

Preview Lab

Preview with #1B6583

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

Preview Lab → · Contrast checker → · Palette generator →