#1B59AD#1B59AD

#1B59AD is a mid, vivid cyan. Relative luminance 0.104; OKLCH L 47.4% C 0.148 H 257.6°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#1B59AD
RGB	rgb(27, 89, 173)
HSL	hsl(215, 73%, 39%)
HSV	hsv(215, 84%, 68%)
CMYK	cmyk(84.4%, 48.6%, 0%, 32.2%)
CIE-LAB	lab(38.54, 12.68, -50.30)
CIE-LCH	lch(38.54, 51.87, 284.14°)
OKLab	oklab(47.4% -0.0318 -0.1447)
OKLCH	oklch(47.4% 0.148 257.6)
XYZ	xyz(11.5644, 10.3935, 40.9237)
Luminance	0.1040 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B59AD #AD6F1B

analogous

#1BA2AD #1B59AD #261BAD

triadic

#1B59AD #AD1B59 #59AD1B

tetradic

#1B59AD #AD1BA2 #AD6F1B #1BAD26

square

#1B59AD #AD1BA2 #AD6F1B #1BAD26

split-complementary

#1B59AD #AD261B #A2AD1B

monochromatic

#0A2343 #133E78 #1B59AD #2875DD #5D97E6

Accessibility & contrast

On white

6.82

#1B59AD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#1B59AD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B59AD

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B59AD	#FFFFFF	#000000	##FFFFFF
##1B59AD	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2862B0

Deuteranopia (green-blind)

#0055AB

Tritanopia (blue-blind)

#006D7A

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #1b59ad;
/* rgb */ color: rgb(27, 89, 173);
/* oklch */ color: oklch(47.4% 0.148 257.6);

Tailwind

colors: {
  custom: {
    50: '#7287c6',
    500: '#1b59ad',
    950: '#000000',
  },
}

SCSS

$custom: #1b59ad;
$custom-light: #7287c6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b59ad",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 173
  },
  "hsl": {
    "h": 214.521,
    "s": 73,
    "l": 39.216
  },
  "oklch": {
    "l": 0.47399,
    "c": 0.14815,
    "h": 257.6
  },
  "luminance": 0.10395
}

Semantic roles & 50–950 ramp

primary

#1B59AD

secondary

#CA9A5A

accent

#A238F0

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#090B13

muted

#7B7C82

Preview Lab

Preview with #1B59AD

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

Preview Lab → · Contrast checker → · Palette generator →