#1F517E#1F517E

#1F517E is a dark, moderate cyan. Relative luminance 0.077; OKLCH L 42.4% C 0.092 H 248.9°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#1F517E
RGB	rgb(31, 81, 126)
HSL	hsl(208, 61%, 31%)
HSV	hsv(208, 75%, 49%)
CMYK	cmyk(75.4%, 35.7%, 0%, 50.6%)
CIE-LAB	lab(33.31, -0.28, -30.23)
CIE-LCH	lch(33.31, 30.23, 269.46°)
OKLab	oklab(42.43% -0.0331 -0.0859)
OKLCH	oklch(42.43% 0.092 248.9)
XYZ	xyz(7.2720, 7.6817, 20.8341)
Luminance	0.0768 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F517E #7E4C1F

analogous

#1F7E7B #1F517E #1F217E

triadic

#1F517E #7E1F51 #517E1F

tetradic

#1F517E #7B1F7E #7E4C1F #217E1F

square

#1F517E #7B1F7E #7E4C1F #217E1F

split-complementary

#1F517E #7E1F21 #7E7B1F

monochromatic

#07121C #13314D #1F517E #2B71AF #468FD1

Accessibility & contrast

On white

8.28

#1F517E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#1F517E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F517E

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F517E	#FFFFFF	#000000	##FFFFFF
##1F517E	1.00	8.28	2.54	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D5380

Deuteranopia (green-blind)

#2F4A7D

Tritanopia (blue-blind)

#005C61

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f517e;
/* rgb */ color: rgb(31, 81, 126);
/* oklch */ color: oklch(42.4% 0.092 248.9);

Tailwind

colors: {
  custom: {
    50: '#6881a3',
    500: '#1f517e',
    950: '#000000',
  },
}

SCSS

$custom: #1f517e;
$custom-light: #6881a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f517e",
  "rgb": {
    "r": 31,
    "g": 81,
    "b": 126
  },
  "hsl": {
    "h": 208.421,
    "s": 60.51,
    "l": 30.784
  },
  "oklch": {
    "l": 0.42426,
    "c": 0.09204,
    "h": 248.9
  },
  "luminance": 0.07683
}

Semantic roles & 50–950 ramp

primary

#1F517E

secondary

#B17A48

accent

#9044E4

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1F517E

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

Preview Lab → · Contrast checker → · Palette generator →