#1D5580#1D5580

#1D5580 is a dark, moderate cyan. Relative luminance 0.083; OKLCH L 43.5% C 0.092 H 245.6°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#1D5580
RGB	rgb(29, 85, 128)
HSL	hsl(206, 63%, 31%)
HSV	hsv(206, 77%, 50%)
CMYK	cmyk(77.3%, 33.6%, 0%, 49.8%)
CIE-LAB	lab(34.63, -2.36, -29.38)
CIE-LCH	lch(34.63, 29.48, 265.40°)
OKLab	oklab(43.48% -0.0378 -0.0834)
OKLCH	oklch(43.48% 0.092 245.6)
XYZ	xyz(7.6500, 8.3158, 21.6198)
Luminance	0.0832 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5580 #80481D

analogous

#1D8079 #1D5580 #1D2380

triadic

#1D5580 #801D55 #55801D

tetradic

#1D5580 #791D80 #80481D #23801D

square

#1D5580 #791D80 #80481D #23801D

split-complementary

#1D5580 #801D23 #80791D

monochromatic

#06131C #12344E #1D5580 #2876B2 #4395D4

Accessibility & contrast

On white

7.88

#1D5580 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#1D5580 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D5580

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5580	#FFFFFF	#000000	##FFFFFF
##1D5580	1.00	7.88	2.66	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#415782

Deuteranopia (green-blind)

#334D7F

Tritanopia (blue-blind)

#005F64

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1d5580;
/* rgb */ color: rgb(29, 85, 128);
/* oklch */ color: oklch(43.5% 0.092 245.6);

Tailwind

colors: {
  custom: {
    50: '#6884a5',
    500: '#1d5580',
    950: '#000000',
  },
}

SCSS

$custom: #1d5580;
$custom-light: #6884a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5580",
  "rgb": {
    "r": 29,
    "g": 85,
    "b": 128
  },
  "hsl": {
    "h": 206.061,
    "s": 63.057,
    "l": 30.784
  },
  "oklch": {
    "l": 0.43484,
    "c": 0.09155,
    "h": 245.6
  },
  "luminance": 0.08317
}

Semantic roles & 50–950 ramp

primary

#1D5580

secondary

#B37545

accent

#8942E6

background

#F6F8FA

surface

#EBEFF4

border

#C6CACE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1D5580

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

Preview Lab → · Contrast checker → · Palette generator →