#1D577F#1D577F

#1D577F is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 43.9% C 0.089 H 243.0°. Best body text is #FFFFFF at 7.71:1 contrast (WCAG AA passes).

Color values

HEX	#1D577F
RGB	rgb(29, 87, 127)
HSL	hsl(204, 63%, 31%)
HSV	hsv(204, 77%, 50%)
CMYK	cmyk(77.2%, 31.5%, 0%, 50.2%)
CIE-LAB	lab(35.22, -4.02, -27.84)
CIE-LCH	lch(35.22, 28.13, 261.79°)
OKLab	oklab(43.93% -0.0402 -0.0788)
OKLCH	oklch(43.93% 0.089 243)
XYZ	xyz(7.7442, 8.6090, 21.3281)
Luminance	0.0861 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D577F #7F451D

analogous

#1D7F76 #1D577F #1D267F

triadic

#1D577F #7F1D57 #577F1D

tetradic

#1D577F #761D7F #7F451D #267F1D

square

#1D577F #761D7F #7F451D #267F1D

split-complementary

#1D577F #7F1D26 #7F761D

monochromatic

#06131B #12354D #1D577F #2879B1 #4299D4

Accessibility & contrast

On white

7.71

#1D577F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#1D577F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D577F

7.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D577F	#FFFFFF	#000000	##FFFFFF
##1D577F	1.00	7.71	2.72	7.71
#FFFFFF	7.71	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#455881

Deuteranopia (green-blind)

#374F7E

Tritanopia (blue-blind)

#006165

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1d577f;
/* rgb */ color: rgb(29, 87, 127);
/* oklch */ color: oklch(43.9% 0.089 243.0);

Tailwind

colors: {
  custom: {
    50: '#6886a4',
    500: '#1d577f',
    950: '#000000',
  },
}

SCSS

$custom: #1d577f;
$custom-light: #6886a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d577f",
  "rgb": {
    "r": 29,
    "g": 87,
    "b": 127
  },
  "hsl": {
    "h": 204.49,
    "s": 62.821,
    "l": 30.588
  },
  "oklch": {
    "l": 0.43931,
    "c": 0.08851,
    "h": 243
  },
  "luminance": 0.0861
}

Semantic roles & 50–950 ramp

primary

#1D577F

secondary

#B27245

accent

#8542E6

background

#F6F8FA

surface

#EBEFF4

border

#C6CACE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1D577F

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

Preview Lab → · Contrast checker → · Palette generator →