#1B5A9D#1B5A9D

#1B5A9D is a mid, vivid cyan. Relative luminance 0.100; OKLCH L 46.5% C 0.125 H 253.4°. Best body text is #FFFFFF at 7.01:1 contrast (WCAG AA passes).

Color values

HEX	#1B5A9D
RGB	rgb(27, 90, 157)
HSL	hsl(211, 71%, 36%)
HSV	hsv(211, 83%, 62%)
CMYK	cmyk(82.8%, 42.7%, 0%, 38.4%)
CIE-LAB	lab(37.80, 5.63, -41.96)
CIE-LCH	lch(37.80, 42.33, 277.64°)
OKLab	oklab(46.5% -0.0357 -0.1201)
OKLCH	oklch(46.5% 0.125 253.4)
XYZ	xyz(10.1917, 9.9784, 33.2806)
Luminance	0.0998 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5A9D #9D5E1B

analogous

#1B9B9D #1B5A9D #1D1B9D

triadic

#1B5A9D #9D1B5A #5A9D1B

tetradic

#1B5A9D #9D1B9B #9D5E1B #1B9D1D

square

#1B5A9D #9D1B9B #9D5E1B #1B9D1D

split-complementary

#1B5A9D #9D1D1B #9B9D1B

monochromatic

#091E35 #123C69 #1B5A9D #2478D1 #5197E1

Accessibility & contrast

On white

7.01

#1B5A9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

3.00

#1B5A9D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5A9D

7.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5A9D	#FFFFFF	#000000	##FFFFFF
##1B5A9D	1.00	7.01	3.00	7.01
#FFFFFF	7.01	1.00	21.00	1.00
#000000	3.00	21.00	1.00	21.00
##FFFFFF	7.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#385FA0

Deuteranopia (green-blind)

#21549C

Tritanopia (blue-blind)

#006A74

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #1b5a9d;
/* rgb */ color: rgb(27, 90, 157);
/* oklch */ color: oklch(46.5% 0.125 253.4);

Tailwind

colors: {
  custom: {
    50: '#6e88ba',
    500: '#1b5a9d',
    950: '#000000',
  },
}

SCSS

$custom: #1b5a9d;
$custom-light: #6e88ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5a9d",
  "rgb": {
    "r": 27,
    "g": 90,
    "b": 157
  },
  "hsl": {
    "h": 210.923,
    "s": 70.652,
    "l": 36.078
  },
  "oklch": {
    "l": 0.46497,
    "c": 0.12534,
    "h": 253.4
  },
  "luminance": 0.0998
}

Semantic roles & 50–950 ramp

primary

#1B5A9D

secondary

#C48C50

accent

#973AED

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B12

muted

#7B7C81

Preview Lab

Preview with #1B5A9D

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

Preview Lab → · Contrast checker → · Palette generator →