#1B589C#1B589C

#1B589C is a mid, vivid cyan. Relative luminance 0.096; OKLCH L 46.0% C 0.126 H 254.3°. Best body text is #FFFFFF at 7.19:1 contrast (WCAG AA passes).

Color values

HEX	#1B589C
RGB	rgb(27, 88, 156)
HSL	hsl(212, 70%, 36%)
HSV	hsv(212, 83%, 61%)
CMYK	cmyk(82.7%, 43.6%, 0%, 38.8%)
CIE-LAB	lab(37.14, 6.54, -42.43)
CIE-LCH	lch(37.14, 42.93, 278.76°)
OKLab	oklab(45.96% -0.0343 -0.1216)
OKLCH	oklch(45.96% 0.126 254.3)
XYZ	xyz(9.9402, 9.6115, 32.7774)
Luminance	0.0961 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B589C #9C5F1B

analogous

#1B989C #1B589C #1E1B9C

triadic

#1B589C #9C1B58 #589C1B

tetradic

#1B589C #9C1B98 #9C5F1B #1B9C1E

square

#1B589C #9C1B98 #9C5F1B #1B9C1E

split-complementary

#1B589C #9C1E1B #989C1B

monochromatic

#091D34 #123B68 #1B589C #2475D0 #5195E1

Accessibility & contrast

On white

7.19

#1B589C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#1B589C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B589C

7.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B589C	#FFFFFF	#000000	##FFFFFF
##1B589C	1.00	7.19	2.92	7.19
#FFFFFF	7.19	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#365E9F

Deuteranopia (green-blind)

#1D529B

Tritanopia (blue-blind)

#006872

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1b589c;
/* rgb */ color: rgb(27, 88, 156);
/* oklch */ color: oklch(46.0% 0.126 254.3);

Tailwind

colors: {
  custom: {
    50: '#6e86ba',
    500: '#1b589c',
    950: '#000000',
  },
}

SCSS

$custom: #1b589c;
$custom-light: #6e86ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1b589c",
  "rgb": {
    "r": 27,
    "g": 88,
    "b": 156
  },
  "hsl": {
    "h": 211.628,
    "s": 70.492,
    "l": 35.882
  },
  "oklch": {
    "l": 0.45957,
    "c": 0.1263,
    "h": 254.3
  },
  "luminance": 0.09613
}

Semantic roles & 50–950 ramp

primary

#1B589C

secondary

#C38D4F

accent

#993BED

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B11

muted

#7B7C80

Preview Lab

Preview with #1B589C

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

Preview Lab → · Contrast checker → · Palette generator →