#1F517D#1F517D

#1F517D is a dark, moderate cyan. Relative luminance 0.077; OKLCH L 42.4% C 0.091 H 248.4°. Best body text is #FFFFFF at 8.30:1 contrast (WCAG AA passes).

Color values

HEX	#1F517D
RGB	rgb(31, 81, 125)
HSL	hsl(208, 60%, 31%)
HSV	hsv(208, 75%, 49%)
CMYK	cmyk(75.2%, 35.2%, 0%, 51%)
CIE-LAB	lab(33.26, -0.67, -29.70)
CIE-LCH	lch(33.26, 29.71, 268.70°)
OKLab	oklab(42.37% -0.0334 -0.0843)
OKLCH	oklch(42.37% 0.091 248.4)
XYZ	xyz(7.2078, 7.6560, 20.4960)
Luminance	0.0766 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F517D #7D4B1F

analogous

#1F7D7A #1F517D #1F227D

triadic

#1F517D #7D1F51 #517D1F

tetradic

#1F517D #7A1F7D #7D4B1F #227D1F

square

#1F517D #7A1F7D #7D4B1F #227D1F

split-complementary

#1F517D #7D1F22 #7D7A1F

monochromatic

#07111B #13314C #1F517D #2B71AE #4590D1

Accessibility & contrast

On white

8.30

#1F517D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#1F517D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F517D

8.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F517D	#FFFFFF	#000000	##FFFFFF
##1F517D	1.00	8.30	2.53	8.30
#FFFFFF	8.30	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D537F

Deuteranopia (green-blind)

#304A7C

Tritanopia (blue-blind)

#005B61

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f517d;
/* rgb */ color: rgb(31, 81, 125);
/* oklch */ color: oklch(42.4% 0.091 248.4);

Tailwind

colors: {
  custom: {
    50: '#6881a3',
    500: '#1f517d',
    950: '#000000',
  },
}

SCSS

$custom: #1f517d;
$custom-light: #6881a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f517d",
  "rgb": {
    "r": 31,
    "g": 81,
    "b": 125
  },
  "hsl": {
    "h": 208.085,
    "s": 60.256,
    "l": 30.588
  },
  "oklch": {
    "l": 0.42365,
    "c": 0.0907,
    "h": 248.4
  },
  "luminance": 0.07657
}

Semantic roles & 50–950 ramp

primary

#1F517D

secondary

#B07948

accent

#8F44E3

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1F517D

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

Preview Lab → · Contrast checker → · Palette generator →