#1F577D#1F577D

#1F577D is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 43.9% C 0.085 H 242.2°. Best body text is #FFFFFF at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#1F577D
RGB	rgb(31, 87, 125)
HSL	hsl(204, 60%, 31%)
HSV	hsv(204, 75%, 49%)
CMYK	cmyk(75.2%, 30.4%, 0%, 51%)
CIE-LAB	lab(35.18, -4.49, -26.67)
CIE-LCH	lch(35.18, 27.05, 260.44°)
OKLab	oklab(43.88% -0.0397 -0.0754)
OKLCH	oklch(43.88% 0.085 242.2)
XYZ	xyz(7.6735, 8.5875, 20.6512)
Luminance	0.0859 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F577D #7D451F

analogous

#1F7D74 #1F577D #1F287D

triadic

#1F577D #7D1F57 #577D1F

tetradic

#1F577D #741F7D #7D451F #287D1F

square

#1F577D #741F7D #7D451F #287D1F

split-complementary

#1F577D #7D1F28 #7D741F

monochromatic

#07131B #13354C #1F577D #2B79AE #4599D1

Accessibility & contrast

On white

7.73

#1F577D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#1F577D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F577D

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F577D	#FFFFFF	#000000	##FFFFFF
##1F577D	1.00	7.73	2.72	7.73
#FFFFFF	7.73	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#46587F

Deuteranopia (green-blind)

#394F7C

Tritanopia (blue-blind)

#006064

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1f577d;
/* rgb */ color: rgb(31, 87, 125);
/* oklch */ color: oklch(43.9% 0.085 242.2);

Tailwind

colors: {
  custom: {
    50: '#6886a3',
    500: '#1f577d',
    950: '#000000',
  },
}

SCSS

$custom: #1f577d;
$custom-light: #6886a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f577d",
  "rgb": {
    "r": 31,
    "g": 87,
    "b": 125
  },
  "hsl": {
    "h": 204.255,
    "s": 60.256,
    "l": 30.588
  },
  "oklch": {
    "l": 0.43881,
    "c": 0.08524,
    "h": 242.2
  },
  "luminance": 0.08588
}

Semantic roles & 50–950 ramp

primary

#1F577D

secondary

#B07248

accent

#8544E3

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1F577D

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

Preview Lab → · Contrast checker → · Palette generator →