#1F577E#1F577E

#1F577E is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 43.9% C 0.086 H 242.9°. Best body text is #FFFFFF at 7.71:1 contrast (WCAG AA passes).

Color values

HEX	#1F577E
RGB	rgb(31, 87, 126)
HSL	hsl(205, 61%, 31%)
HSV	hsv(205, 75%, 49%)
CMYK	cmyk(75.4%, 31%, 0%, 50.6%)
CIE-LAB	lab(35.23, -4.11, -27.21)
CIE-LCH	lch(35.23, 27.52, 261.41°)
OKLab	oklab(43.94% -0.0394 -0.077)
OKLCH	oklch(43.94% 0.086 242.9)
XYZ	xyz(7.7377, 8.6132, 20.9893)
Luminance	0.0861 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F577E #7E461F

analogous

#1F7E75 #1F577E #1F277E

triadic

#1F577E #7E1F57 #577E1F

tetradic

#1F577E #751F7E #7E461F #277E1F

square

#1F577E #751F7E #7E461F #277E1F

split-complementary

#1F577E #7E1F27 #7E751F

monochromatic

#07131C #13354D #1F577E #2B79AF #4698D1

Accessibility & contrast

On white

7.71

#1F577E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#1F577E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F577E

7.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F577E	#FFFFFF	#000000	##FFFFFF
##1F577E	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)

#455880

Deuteranopia (green-blind)

#384F7D

Tritanopia (blue-blind)

#006165

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1f577e;
/* rgb */ color: rgb(31, 87, 126);
/* oklch */ color: oklch(43.9% 0.086 242.9);

Tailwind

colors: {
  custom: {
    50: '#6886a3',
    500: '#1f577e',
    950: '#000000',
  },
}

SCSS

$custom: #1f577e;
$custom-light: #6886a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f577e",
  "rgb": {
    "r": 31,
    "g": 87,
    "b": 126
  },
  "hsl": {
    "h": 204.632,
    "s": 60.51,
    "l": 30.784
  },
  "oklch": {
    "l": 0.43938,
    "c": 0.08647,
    "h": 242.9
  },
  "luminance": 0.08614
}

Semantic roles & 50–950 ramp

primary

#1F577E

secondary

#B17348

accent

#8644E4

background

#F6F8FA

surface

#EBEFF4

border

#C6CACE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1F577E

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

Preview Lab → · Contrast checker → · Palette generator →