#1D5571#1D5571

#1D5571 is a dark, moderate cyan. Relative luminance 0.080; OKLCH L 42.6% C 0.074 H 234.2°. Best body text is #FFFFFF at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#1D5571
RGB	rgb(29, 85, 113)
HSL	hsl(200, 59%, 28%)
HSV	hsv(200, 74%, 44%)
CMYK	cmyk(74.3%, 24.8%, 0%, 55.7%)
CIE-LAB	lab(33.88, -8.09, -21.27)
CIE-LCH	lch(33.88, 22.76, 249.18°)
OKLab	oklab(42.64% -0.0431 -0.0598)
OKLCH	oklch(42.64% 0.074 234.2)
XYZ	xyz(6.7347, 7.9497, 16.7991)
Luminance	0.0795 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5571 #71391D

analogous

#1D7163 #1D5571 #1D2B71

triadic

#1D5571 #711D55 #55711D

tetradic

#1D5571 #631D71 #71391D #2B711D

square

#1D5571 #631D71 #71391D #2B711D

split-complementary

#1D5571 #711D2B #71631D

monochromatic

#061218 #113040 #1D5571 #297AA2 #3C9CCD

Accessibility & contrast

On white

8.11

#1D5571 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#1D5571 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D5571

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5571	#FFFFFF	#000000	##FFFFFF
##1D5571	1.00	8.11	2.59	8.11
#FFFFFF	8.11	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#475472

Deuteranopia (green-blind)

#3C4C71

Tritanopia (blue-blind)

#005C5E

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1d5571;
/* rgb */ color: rgb(29, 85, 113);
/* oklch */ color: oklch(42.6% 0.074 234.2);

Tailwind

colors: {
  custom: {
    50: '#65849a',
    500: '#1d5571',
    950: '#000000',
  },
}

SCSS

$custom: #1d5571;
$custom-light: #65849a;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5571",
  "rgb": {
    "r": 29,
    "g": 85,
    "b": 113
  },
  "hsl": {
    "h": 200,
    "s": 59.155,
    "l": 27.843
  },
  "oklch": {
    "l": 0.42638,
    "c": 0.07374,
    "h": 234.2
  },
  "luminance": 0.0795
}

Semantic roles & 50–950 ramp

primary

#1D5571

secondary

#A56544

accent

#7A45E2

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0E

muted

#7A7C7E

Preview Lab

Preview with #1D5571

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

Preview Lab → · Contrast checker → · Palette generator →