#1B5B9E#1B5B9E

#1B5B9E is a mid, vivid cyan. Relative luminance 0.102; OKLCH L 46.8% C 0.126 H 253.2°. Best body text is #FFFFFF at 6.92:1 contrast (WCAG AA passes).

Color values

HEX	#1B5B9E
RGB	rgb(27, 91, 158)
HSL	hsl(211, 71%, 36%)
HSV	hsv(211, 83%, 62%)
CMYK	cmyk(82.9%, 42.4%, 0%, 38%)
CIE-LAB	lab(38.17, 5.38, -41.97)
CIE-LCH	lch(38.17, 42.32, 277.30°)
OKLab	oklab(46.8% -0.0363 -0.1202)
OKLCH	oklch(46.8% 0.126 253.2)
XYZ	xyz(10.3623, 10.1825, 33.7604)
Luminance	0.1018 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5B9E #9E5E1B

analogous

#1B9D9E #1B5B9E #1D1B9E

triadic

#1B5B9E #9E1B5B #5B9E1B

tetradic

#1B5B9E #9E1B9D #9E5E1B #1B9E1D

square

#1B5B9E #9E1B9D #9E5E1B #1B9E1D

split-complementary

#1B5B9E #9E1D1B #9D9E1B

monochromatic

#091F35 #123D6A #1B5B9E #2479D2 #5298E1

Accessibility & contrast

On white

6.92

#1B5B9E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#1B5B9E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5B9E

6.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5B9E	#FFFFFF	#000000	##FFFFFF
##1B5B9E	1.00	6.92	3.04	6.92
#FFFFFF	6.92	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A60A1

Deuteranopia (green-blind)

#22549D

Tritanopia (blue-blind)

#006B75

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1b5b9e;
/* rgb */ color: rgb(27, 91, 158);
/* oklch */ color: oklch(46.8% 0.126 253.2);

Tailwind

colors: {
  custom: {
    50: '#6e88bb',
    500: '#1b5b9e',
    950: '#000000',
  },
}

SCSS

$custom: #1b5b9e;
$custom-light: #6e88bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5b9e",
  "rgb": {
    "r": 27,
    "g": 91,
    "b": 158
  },
  "hsl": {
    "h": 210.687,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.468,
    "c": 0.12554,
    "h": 253.2
  },
  "luminance": 0.10184
}

Semantic roles & 50–950 ramp

primary

#1B5B9E

secondary

#C48C51

accent

#963AEE

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B12

muted

#7B7C81

Preview Lab

Preview with #1B5B9E

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

Preview Lab → · Contrast checker → · Palette generator →