#1B5E8B#1B5E8B

#1B5E8B is a mid, moderate cyan. Relative luminance 0.101; OKLCH L 46.3% C 0.098 H 243.1°. Best body text is #FFFFFF at 6.95:1 contrast (WCAG AA passes).

Color values

HEX	#1B5E8B
RGB	rgb(27, 94, 139)
HSL	hsl(204, 67%, 33%)
HSV	hsv(204, 81%, 55%)
CMYK	cmyk(80.6%, 32.4%, 0%, 45.5%)
CIE-LAB	lab(38.02, -4.01, -30.76)
CIE-LCH	lch(38.02, 31.02, 262.57°)
OKLab	oklab(46.34% -0.0443 -0.0873)
OKLCH	oklch(46.34% 0.098 243.1)
XYZ	xyz(9.1131, 10.1014, 25.8906)
Luminance	0.1010 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5E8B #8B481B

analogous

#1B8B80 #1B5E8B #1B268B

triadic

#1B5E8B #8B1B5E #5E8B1B

tetradic

#1B5E8B #801B8B #8B481B #268B1B

square

#1B5E8B #801B8B #8B481B #268B1B

split-complementary

#1B5E8B #8B1B26 #8B801B

monochromatic

#071925 #113B58 #1B5E8B #2581BE #459FDB

Accessibility & contrast

On white

6.95

#1B5E8B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#1B5E8B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5E8B

6.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5E8B	#FFFFFF	#000000	##FFFFFF
##1B5E8B	1.00	6.95	3.02	6.95
#FFFFFF	6.95	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#495F8D

Deuteranopia (green-blind)

#39558A

Tritanopia (blue-blind)

#00696E

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #1b5e8b;
/* rgb */ color: rgb(27, 94, 139);
/* oklch */ color: oklch(46.3% 0.098 243.1);

Tailwind

colors: {
  custom: {
    50: '#6a8bad',
    500: '#1b5e8b',
    950: '#000000',
  },
}

SCSS

$custom: #1b5e8b;
$custom-light: #6a8bad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5e8b",
  "rgb": {
    "r": 27,
    "g": 94,
    "b": 139
  },
  "hsl": {
    "h": 204.107,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.46337,
    "c": 0.09788,
    "h": 243.1
  },
  "luminance": 0.10102
}

Semantic roles & 50–950 ramp

primary

#1B5E8B

secondary

#BC7545

accent

#833DEA

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#070C10

muted

#7A7D7F

Preview Lab

Preview with #1B5E8B

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

Preview Lab → · Contrast checker → · Palette generator →