#1B5D8A#1B5D8A

#1B5D8A is a mid, moderate cyan. Relative luminance 0.099; OKLCH L 46.0% C 0.098 H 243.4°. Best body text is #FFFFFF at 7.05:1 contrast (WCAG AA passes).

Color values

HEX	#1B5D8A
RGB	rgb(27, 93, 138)
HSL	hsl(204, 67%, 32%)
HSV	hsv(204, 80%, 54%)
CMYK	cmyk(80.4%, 32.6%, 0%, 45.9%)
CIE-LAB	lab(37.65, -3.78, -30.74)
CIE-LCH	lch(37.65, 30.97, 262.99°)
OKLab	oklab(46.03% -0.0437 -0.0872)
OKLCH	oklch(46.03% 0.098 243.4)
XYZ	xyz(8.9520, 9.8956, 25.4781)
Luminance	0.0990 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5D8A #8A481B

analogous

#1B8A7F #1B5D8A #1B268A

triadic

#1B5D8A #8A1B5D #5D8A1B

tetradic

#1B5D8A #7F1B8A #8A481B #268A1B

square

#1B5D8A #7F1B8A #8A481B #268A1B

split-complementary

#1B5D8A #8A1B26 #8A7F1B

monochromatic

#071824 #113B57 #1B5D8A #257FBD #459EDB

Accessibility & contrast

On white

7.05

#1B5D8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#1B5D8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5D8A

7.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5D8A	#FFFFFF	#000000	##FFFFFF
##1B5D8A	1.00	7.05	2.98	7.05
#FFFFFF	7.05	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#485E8C

Deuteranopia (green-blind)

#395489

Tritanopia (blue-blind)

#00686D

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #1b5d8a;
/* rgb */ color: rgb(27, 93, 138);
/* oklch */ color: oklch(46.0% 0.098 243.4);

Tailwind

colors: {
  custom: {
    50: '#6a8aac',
    500: '#1b5d8a',
    950: '#000000',
  },
}

SCSS

$custom: #1b5d8a;
$custom-light: #6a8aac;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5d8a",
  "rgb": {
    "r": 27,
    "g": 93,
    "b": 138
  },
  "hsl": {
    "h": 204.324,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.46028,
    "c": 0.09755,
    "h": 243.4
  },
  "luminance": 0.09897
}

Semantic roles & 50–950 ramp

primary

#1B5D8A

secondary

#BC7545

accent

#843EEA

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #1B5D8A

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

Preview Lab → · Contrast checker → · Palette generator →