#1F577C#1F577C

#1F577C is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 43.8% C 0.084 H 241.5°. Best body text is #FFFFFF at 7.74:1 contrast (WCAG AA passes).

Color values

HEX	#1F577C
RGB	rgb(31, 87, 124)
HSL	hsl(204, 60%, 30%)
HSV	hsv(204, 75%, 49%)
CMYK	cmyk(75%, 29.8%, 0%, 51.4%)
CIE-LAB	lab(35.13, -4.87, -26.14)
CIE-LCH	lch(35.13, 26.59, 259.44°)
OKLab	oklab(43.82% -0.0401 -0.0739)
OKLCH	oklch(43.82% 0.084 241.5)
XYZ	xyz(7.6099, 8.5621, 20.3165)
Luminance	0.0856 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F577C #7C441F

analogous

#1F7C72 #1F577C #1F287C

triadic

#1F577C #7C1F57 #577C1F

tetradic

#1F577C #721F7C #7C441F #287C1F

square

#1F577C #721F7C #7C441F #287C1F

split-complementary

#1F577C #7C1F28 #7C721F

monochromatic

#07121A #13354B #1F577C #2B79AD #4599D0

Accessibility & contrast

On white

7.74

#1F577C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#1F577C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F577C

7.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F577C	#FFFFFF	#000000	##FFFFFF
##1F577C	1.00	7.74	2.71	7.74
#FFFFFF	7.74	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#46587E

Deuteranopia (green-blind)

#394F7B

Tritanopia (blue-blind)

#006064

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1f577c;
/* rgb */ color: rgb(31, 87, 124);
/* oklch */ color: oklch(43.8% 0.084 241.5);

Tailwind

colors: {
  custom: {
    50: '#6886a2',
    500: '#1f577c',
    950: '#000000',
  },
}

SCSS

$custom: #1f577c;
$custom-light: #6886a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f577c",
  "rgb": {
    "r": 31,
    "g": 87,
    "b": 124
  },
  "hsl": {
    "h": 203.871,
    "s": 60,
    "l": 30.392
  },
  "oklch": {
    "l": 0.43824,
    "c": 0.08402,
    "h": 241.5
  },
  "luminance": 0.08563
}

Semantic roles & 50–950 ramp

primary

#1F577C

secondary

#AF7148

accent

#8445E3

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1F577C

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

Preview Lab → · Contrast checker → · Palette generator →