#1B59A1#1B59A1

#1B59A1 is a mid, vivid cyan. Relative luminance 0.100; OKLCH L 46.5% C 0.132 H 255.0°. Best body text is #FFFFFF at 7.02:1 contrast (WCAG AA passes).

Color values

HEX	#1B59A1
RGB	rgb(27, 89, 161)
HSL	hsl(212, 71%, 37%)
HSV	hsv(212, 83%, 63%)
CMYK	cmyk(83.2%, 44.7%, 0%, 36.9%)
CIE-LAB	lab(37.75, 7.88, -44.43)
CIE-LCH	lch(37.75, 45.13, 280.06°)
OKLab	oklab(46.54% -0.034 -0.1274)
OKLCH	oklch(46.54% 0.132 255)
XYZ	xyz(10.4550, 9.9497, 35.0808)
Luminance	0.0995 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B59A1 #A1631B

analogous

#1B9CA1 #1B59A1 #201BA1

triadic

#1B59A1 #A11B59 #59A11B

tetradic

#1B59A1 #A11B9C #A1631B #1BA120

square

#1B59A1 #A11B9C #A1631B #1BA120

split-complementary

#1B59A1 #A1201B #9CA11B

monochromatic

#091F38 #123C6D #1B59A1 #2476D5 #5496E2

Accessibility & contrast

On white

7.02

#1B59A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.99

#1B59A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B59A1

7.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B59A1	#FFFFFF	#000000	##FFFFFF
##1B59A1	1.00	7.02	2.99	7.02
#FFFFFF	7.02	1.00	21.00	1.00
#000000	2.99	21.00	1.00	21.00
##FFFFFF	7.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345FA4

Deuteranopia (green-blind)

#1753A0

Tritanopia (blue-blind)

#006A75

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #1b59a1;
/* rgb */ color: rgb(27, 89, 161);
/* oklch */ color: oklch(46.5% 0.132 255.0);

Tailwind

colors: {
  custom: {
    50: '#6f87bd',
    500: '#1b59a1',
    950: '#000000',
  },
}

SCSS

$custom: #1b59a1;
$custom-light: #6f87bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b59a1",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 161
  },
  "hsl": {
    "h": 212.239,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.46537,
    "c": 0.13191,
    "h": 255
  },
  "luminance": 0.09951
}

Semantic roles & 50–950 ramp

primary

#1B59A1

secondary

#C59052

accent

#9B3AEE

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #1B59A1

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

Preview Lab → · Contrast checker → · Palette generator →