#1B5F8D#1B5F8D

#1B5F8D is a mid, moderate cyan. Relative luminance 0.103; OKLCH L 46.7% C 0.099 H 243.3°. Best body text is #FFFFFF at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#1B5F8D
RGB	rgb(27, 95, 141)
HSL	hsl(204, 68%, 33%)
HSV	hsv(204, 81%, 55%)
CMYK	cmyk(80.9%, 32.6%, 0%, 44.7%)
CIE-LAB	lab(38.44, -3.86, -31.31)
CIE-LCH	lch(38.44, 31.55, 262.97°)
OKLab	oklab(46.7% -0.0447 -0.0888)
OKLCH	oklch(46.7% 0.099 243.3)
XYZ	xyz(9.3500, 10.3394, 26.6971)
Luminance	0.1034 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5F8D #8D491B

analogous

#1B8D82 #1B5F8D #1B268D

triadic

#1B5F8D #8D1B5F #5F8D1B

tetradic

#1B5F8D #821B8D #8D491B #268D1B

square

#1B5F8D #821B8D #8D491B #268D1B

split-complementary

#1B5F8D #8D1B26 #8D821B

monochromatic

#071A26 #113C5A #1B5F8D #2582C0 #47A0DC

Accessibility & contrast

On white

6.84

#1B5F8D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#1B5F8D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5F8D

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5F8D	#FFFFFF	#000000	##FFFFFF
##1B5F8D	1.00	6.84	3.07	6.84
#FFFFFF	6.84	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A608F

Deuteranopia (green-blind)

#3A568C

Tritanopia (blue-blind)

#006A6F

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1b5f8d;
/* rgb */ color: rgb(27, 95, 141);
/* oklch */ color: oklch(46.7% 0.099 243.3);

Tailwind

colors: {
  custom: {
    50: '#6a8cae',
    500: '#1b5f8d',
    950: '#000000',
  },
}

SCSS

$custom: #1b5f8d;
$custom-light: #6a8cae;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5f8d",
  "rgb": {
    "r": 27,
    "g": 95,
    "b": 141
  },
  "hsl": {
    "h": 204.211,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.46704,
    "c": 0.09945,
    "h": 243.3
  },
  "luminance": 0.10341
}

Semantic roles & 50–950 ramp

primary

#1B5F8D

secondary

#BD7646

accent

#833DEB

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #1B5F8D

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

Preview Lab → · Contrast checker → · Palette generator →