#1B589E#1B589E

#1B589E is a mid, vivid cyan. Relative luminance 0.097; OKLCH L 46.1% C 0.129 H 254.8°. Best body text is #FFFFFF at 7.15:1 contrast (WCAG AA passes).

Color values

HEX	#1B589E
RGB	rgb(27, 88, 158)
HSL	hsl(212, 71%, 36%)
HSV	hsv(212, 83%, 62%)
CMYK	cmyk(82.9%, 44.3%, 0%, 38%)
CIE-LAB	lab(37.26, 7.34, -43.42)
CIE-LCH	lch(37.26, 44.04, 279.59°)
OKLab	oklab(46.1% -0.0338 -0.1245)
OKLCH	oklch(46.1% 0.129 254.8)
XYZ	xyz(10.1110, 9.6798, 33.6766)
Luminance	0.0968 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B589E #9E611B

analogous

#1B9A9E #1B589E #201B9E

triadic

#1B589E #9E1B58 #589E1B

tetradic

#1B589E #9E1B9A #9E611B #1B9E20

square

#1B589E #9E1B9A #9E611B #1B9E20

split-complementary

#1B589E #9E201B #9A9E1B

monochromatic

#091E35 #123B6A #1B589E #2475D2 #5295E1

Accessibility & contrast

On white

7.15

#1B589E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#1B589E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B589E

7.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B589E	#FFFFFF	#000000	##FFFFFF
##1B589E	1.00	7.15	2.94	7.15
#FFFFFF	7.15	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345EA1

Deuteranopia (green-blind)

#1A529D

Tritanopia (blue-blind)

#006973

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1b589e;
/* rgb */ color: rgb(27, 88, 158);
/* oklch */ color: oklch(46.1% 0.129 254.8);

Tailwind

colors: {
  custom: {
    50: '#6e86bb',
    500: '#1b589e',
    950: '#000000',
  },
}

SCSS

$custom: #1b589e;
$custom-light: #6e86bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b589e",
  "rgb": {
    "r": 27,
    "g": 88,
    "b": 158
  },
  "hsl": {
    "h": 212.061,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.46095,
    "c": 0.129,
    "h": 254.8
  },
  "luminance": 0.09681
}

Semantic roles & 50–950 ramp

primary

#1B589E

secondary

#C48E51

accent

#9A3AEE

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B12

muted

#7B7C81

Preview Lab

Preview with #1B589E

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

Preview Lab → · Contrast checker → · Palette generator →