#1F517F#1F517F

#1F517F is a dark, moderate cyan. Relative luminance 0.077; OKLCH L 42.5% C 0.093 H 249.4°. Best body text is #FFFFFF at 8.26:1 contrast (WCAG AA passes).

Color values

HEX	#1F517F
RGB	rgb(31, 81, 127)
HSL	hsl(209, 61%, 31%)
HSV	hsv(209, 76%, 50%)
CMYK	cmyk(75.6%, 36.2%, 0%, 50.2%)
CIE-LAB	lab(33.37, 0.11, -30.76)
CIE-LCH	lch(33.37, 30.76, 270.20°)
OKLab	oklab(42.49% -0.0328 -0.0874)
OKLCH	oklch(42.49% 0.093 249.4)
XYZ	xyz(7.3368, 7.7076, 21.1756)
Luminance	0.0771 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F517F #7F4D1F

analogous

#1F7F7D #1F517F #1F217F

triadic

#1F517F #7F1F51 #517F1F

tetradic

#1F517F #7D1F7F #7F4D1F #217F1F

square

#1F517F #7D1F7F #7F4D1F #217F1F

split-complementary

#1F517F #7F1F21 #7F7D1F

monochromatic

#07121D #13324E #1F517F #2B70B0 #468FD2

Accessibility & contrast

On white

8.26

#1F517F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#1F517F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F517F

8.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F517F	#FFFFFF	#000000	##FFFFFF
##1F517F	1.00	8.26	2.54	8.26
#FFFFFF	8.26	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C5381

Deuteranopia (green-blind)

#2E4A7E

Tritanopia (blue-blind)

#005C62

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f517f;
/* rgb */ color: rgb(31, 81, 127);
/* oklch */ color: oklch(42.5% 0.093 249.4);

Tailwind

colors: {
  custom: {
    50: '#6881a4',
    500: '#1f517f',
    950: '#000000',
  },
}

SCSS

$custom: #1f517f;
$custom-light: #6881a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f517f",
  "rgb": {
    "r": 31,
    "g": 81,
    "b": 127
  },
  "hsl": {
    "h": 208.75,
    "s": 60.759,
    "l": 30.98
  },
  "oklch": {
    "l": 0.42488,
    "c": 0.09338,
    "h": 249.4
  },
  "luminance": 0.07708
}

Semantic roles & 50–950 ramp

primary

#1F517F

secondary

#B27B48

accent

#9144E4

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1F517F

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

Preview Lab → · Contrast checker → · Palette generator →