#1B5D8E#1B5D8E

#1B5D8E is a mid, moderate cyan. Relative luminance 0.100; OKLCH L 46.3% C 0.103 H 245.5°. Best body text is #FFFFFF at 6.99:1 contrast (WCAG AA passes).

Color values

HEX	#1B5D8E
RGB	rgb(27, 93, 142)
HSL	hsl(206, 68%, 33%)
HSV	hsv(206, 81%, 56%)
CMYK	cmyk(81%, 34.5%, 0%, 44.3%)
CIE-LAB	lab(37.87, -2.22, -32.83)
CIE-LCH	lch(37.87, 32.90, 266.13°)
OKLab	oklab(46.27% -0.0424 -0.0933)
OKLCH	oklch(46.27% 0.103 245.5)
XYZ	xyz(9.2469, 10.0136, 27.0314)
Luminance	0.1002 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5D8E #8E4C1B

analogous

#1B8E85 #1B5D8E #1B248E

triadic

#1B5D8E #8E1B5D #5D8E1B

tetradic

#1B5D8E #851B8E #8E4C1B #248E1B

square

#1B5D8E #851B8E #8E4C1B #248E1B

split-complementary

#1B5D8E #8E1B24 #8E851B

monochromatic

#071A27 #113B5B #1B5D8E #257FC1 #479DDC

Accessibility & contrast

On white

6.99

#1B5D8E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.00

#1B5D8E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5D8E

6.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5D8E	#FFFFFF	#000000	##FFFFFF
##1B5D8E	1.00	6.99	3.00	6.99
#FFFFFF	6.99	1.00	21.00	1.00
#000000	3.00	21.00	1.00	21.00
##FFFFFF	6.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#465F90

Deuteranopia (green-blind)

#36548D

Tritanopia (blue-blind)

#00696F

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #1b5d8e;
/* rgb */ color: rgb(27, 93, 142);
/* oklch */ color: oklch(46.3% 0.103 245.5);

Tailwind

colors: {
  custom: {
    50: '#6b8aaf',
    500: '#1b5d8e',
    950: '#000000',
  },
}

SCSS

$custom: #1b5d8e;
$custom-light: #6b8aaf;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5d8e",
  "rgb": {
    "r": 27,
    "g": 93,
    "b": 142
  },
  "hsl": {
    "h": 205.565,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.46265,
    "c": 0.10251,
    "h": 245.5
  },
  "luminance": 0.10015
}

Semantic roles & 50–950 ramp

primary

#1B5D8E

secondary

#BE7A47

accent

#873DEB

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #1B5D8E

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

Preview Lab → · Contrast checker → · Palette generator →