#1B5D8F#1B5D8F

#1B5D8F is a mid, moderate cyan. Relative luminance 0.100; OKLCH L 46.3% C 0.104 H 246.0°. Best body text is #FFFFFF at 6.98:1 contrast (WCAG AA passes).

Color values

HEX	#1B5D8F
RGB	rgb(27, 93, 143)
HSL	hsl(206, 68%, 33%)
HSV	hsv(206, 81%, 56%)
CMYK	cmyk(81.1%, 35%, 0%, 43.9%)
CIE-LAB	lab(37.92, -1.83, -33.34)
CIE-LCH	lch(37.92, 33.40, 266.86°)
OKLab	oklab(46.33% -0.0421 -0.0948)
OKLCH	oklch(46.33% 0.104 246)
XYZ	xyz(9.3224, 10.0438, 27.4286)
Luminance	0.1004 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5D8F #8F4D1B

analogous

#1B8F87 #1B5D8F #1B238F

triadic

#1B5D8F #8F1B5D #5D8F1B

tetradic

#1B5D8F #871B8F #8F4D1B #238F1B

square

#1B5D8F #871B8F #8F4D1B #238F1B

split-complementary

#1B5D8F #8F1B23 #8F871B

monochromatic

#081A28 #113C5C #1B5D8F #257EC2 #489CDC

Accessibility & contrast

On white

6.98

#1B5D8F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#1B5D8F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5D8F

6.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5D8F	#FFFFFF	#000000	##FFFFFF
##1B5D8F	1.00	6.98	3.01	6.98
#FFFFFF	6.98	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#465F91

Deuteranopia (green-blind)

#35548E

Tritanopia (blue-blind)

#00696F

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #1b5d8f;
/* rgb */ color: rgb(27, 93, 143);
/* oklch */ color: oklch(46.3% 0.104 246.0);

Tailwind

colors: {
  custom: {
    50: '#6b8ab0',
    500: '#1b5d8f',
    950: '#000000',
  },
}

SCSS

$custom: #1b5d8f;
$custom-light: #6b8ab0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5d8f",
  "rgb": {
    "r": 27,
    "g": 93,
    "b": 143
  },
  "hsl": {
    "h": 205.862,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.46325,
    "c": 0.10376,
    "h": 246
  },
  "luminance": 0.10045
}

Semantic roles & 50–950 ramp

primary

#1B5D8F

secondary

#BE7B48

accent

#883DEB

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #1B5D8F

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

Preview Lab → · Contrast checker → · Palette generator →