#1B5B82#1B5B82

#1B5B82 is a mid, moderate cyan. Relative luminance 0.093; OKLCH L 45.1% C 0.090 H 240.3°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#1B5B82
RGB	rgb(27, 91, 130)
HSL	hsl(203, 66%, 31%)
HSV	hsv(203, 79%, 51%)
CMYK	cmyk(79.2%, 30%, 0%, 49%)
CIE-LAB	lab(36.60, -5.62, -27.51)
CIE-LCH	lch(36.60, 28.08, 258.45°)
OKLab	oklab(45.06% -0.0444 -0.0778)
OKLCH	oklch(45.06% 0.09 240.3)
XYZ	xyz(8.2208, 9.3259, 22.4816)
Luminance	0.0933 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5B82 #82421B

analogous

#1B8275 #1B5B82 #1B2882

triadic

#1B5B82 #821B5B #5B821B

tetradic

#1B5B82 #751B82 #82421B #28821B

square

#1B5B82 #751B82 #82421B #28821B

split-complementary

#1B5B82 #821B28 #82751B

monochromatic

#06141D #10384F #1B5B82 #267EB5 #409ED7

Accessibility & contrast

On white

7.33

#1B5B82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#1B5B82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5B82

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5B82	#FFFFFF	#000000	##FFFFFF
##1B5B82	1.00	7.33	2.87	7.33
#FFFFFF	7.33	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#495B84

Deuteranopia (green-blind)

#3B5281

Tritanopia (blue-blind)

#006569

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1b5b82;
/* rgb */ color: rgb(27, 91, 130);
/* oklch */ color: oklch(45.1% 0.090 240.3);

Tailwind

colors: {
  custom: {
    50: '#6889a6',
    500: '#1b5b82',
    950: '#000000',
  },
}

SCSS

$custom: #1b5b82;
$custom-light: #6889a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5b82",
  "rgb": {
    "r": 27,
    "g": 91,
    "b": 130
  },
  "hsl": {
    "h": 202.718,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.45062,
    "c": 0.08961,
    "h": 240.3
  },
  "luminance": 0.09327
}

Semantic roles & 50–950 ramp

primary

#1B5B82

secondary

#B66F43

accent

#7F3FE9

background

#F6F8FA

surface

#EBF0F4

border

#C6CBCE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1B5B82

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

Preview Lab → · Contrast checker → · Palette generator →