#1B59A9#1B59A9

#1B59A9 is a mid, vivid cyan. Relative luminance 0.102; OKLCH L 47.1% C 0.143 H 256.8°. Best body text is #FFFFFF at 6.89:1 contrast (WCAG AA passes).

Color values

HEX	#1B59A9
RGB	rgb(27, 89, 169)
HSL	hsl(214, 72%, 38%)
HSV	hsv(214, 84%, 66%)
CMYK	cmyk(84%, 47.3%, 0%, 33.7%)
CIE-LAB	lab(38.27, 11.08, -48.36)
CIE-LCH	lch(38.27, 49.61, 282.90°)
OKLab	oklab(47.11% -0.0325 -0.139)
OKLCH	oklch(47.11% 0.143 256.8)
XYZ	xyz(11.1831, 10.2410, 38.9157)
Luminance	0.1024 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B59A9 #A96B1B

analogous

#1BA0A9 #1B59A9 #241BA9

triadic

#1B59A9 #A91B59 #59A91B

tetradic

#1B59A9 #A91BA0 #A96B1B #1BA924

square

#1B59A9 #A91BA0 #A96B1B #1BA924

split-complementary

#1B59A9 #A9241B #A0A91B

monochromatic

#0A213F #133D74 #1B59A9 #2575DC #5A96E5

Accessibility & contrast

On white

6.89

#1B59A9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#1B59A9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B59A9

6.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B59A9	#FFFFFF	#000000	##FFFFFF
##1B59A9	1.00	6.89	3.05	6.89
#FFFFFF	6.89	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C61AC

Deuteranopia (green-blind)

#0054A7

Tritanopia (blue-blind)

#006C79

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1b59a9;
/* rgb */ color: rgb(27, 89, 169);
/* oklch */ color: oklch(47.1% 0.143 256.8);

Tailwind

colors: {
  custom: {
    50: '#7187c3',
    500: '#1b59a9',
    950: '#000000',
  },
}

SCSS

$custom: #1b59a9;
$custom-light: #7187c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b59a9",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 169
  },
  "hsl": {
    "h": 213.803,
    "s": 72.449,
    "l": 38.431
  },
  "oklch": {
    "l": 0.47106,
    "c": 0.14274,
    "h": 256.8
  },
  "luminance": 0.10242
}

Semantic roles & 50–950 ramp

primary

#1B59A9

secondary

#C89758

accent

#9F39EF

background

#F7F8FC

surface

#EDEFF8

border

#C8CAD1

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #1B59A9

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

Preview Lab → · Contrast checker → · Palette generator →