#1D577C#1D577C

#1D577C is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 43.8% C 0.085 H 240.9°. Best body text is #FFFFFF at 7.76:1 contrast (WCAG AA passes).

Color values

HEX	#1D577C
RGB	rgb(29, 87, 124)
HSL	hsl(203, 62%, 30%)
HSV	hsv(203, 77%, 49%)
CMYK	cmyk(76.6%, 29.8%, 0%, 51.4%)
CIE-LAB	lab(35.07, -5.17, -26.23)
CIE-LCH	lch(35.07, 26.74, 258.86°)
OKLab	oklab(43.76% -0.0412 -0.0742)
OKLCH	oklch(43.76% 0.085 240.9)
XYZ	xyz(7.5516, 8.5320, 20.3137)
Luminance	0.0853 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D577C #7C421D

analogous

#1D7C71 #1D577C #1D287C

triadic

#1D577C #7C1D57 #577C1D

tetradic

#1D577C #711D7C #7C421D #287C1D

square

#1D577C #711D7C #7C421D #287C1D

split-complementary

#1D577C #7C1D28 #7C711D

monochromatic

#061119 #11344A #1D577C #297AAE #419AD3

Accessibility & contrast

On white

7.76

#1D577C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#1D577C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D577C

7.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D577C	#FFFFFF	#000000	##FFFFFF
##1D577C	1.00	7.76	2.71	7.76
#FFFFFF	7.76	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#46577E

Deuteranopia (green-blind)

#394E7B

Tritanopia (blue-blind)

#006064

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1d577c;
/* rgb */ color: rgb(29, 87, 124);
/* oklch */ color: oklch(43.8% 0.085 240.9);

Tailwind

colors: {
  custom: {
    50: '#6786a2',
    500: '#1d577c',
    950: '#000000',
  },
}

SCSS

$custom: #1d577c;
$custom-light: #6786a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d577c",
  "rgb": {
    "r": 29,
    "g": 87,
    "b": 124
  },
  "hsl": {
    "h": 203.368,
    "s": 62.092,
    "l": 30
  },
  "oklch": {
    "l": 0.4376,
    "c": 0.08486,
    "h": 240.9
  },
  "luminance": 0.08533
}

Semantic roles & 50–950 ramp

primary

#1D577C

secondary

#B06F45

accent

#8243E5

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1D577C

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

Preview Lab → · Contrast checker → · Palette generator →