#1F517C#1F517C

#1F517C is a dark, moderate cyan. Relative luminance 0.076; OKLCH L 42.3% C 0.089 H 247.8°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#1F517C
RGB	rgb(31, 81, 124)
HSL	hsl(208, 60%, 30%)
HSV	hsv(208, 75%, 49%)
CMYK	cmyk(75%, 34.7%, 0%, 51.4%)
CIE-LAB	lab(33.20, -1.06, -29.16)
CIE-LCH	lch(33.20, 29.18, 267.91°)
OKLab	oklab(42.3% -0.0337 -0.0827)
OKLCH	oklch(42.3% 0.089 247.8)
XYZ	xyz(7.1442, 7.6306, 20.1612)
Luminance	0.0763 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F517C #7C4A1F

analogous

#1F7C78 #1F517C #1F227C

triadic

#1F517C #7C1F51 #517C1F

tetradic

#1F517C #781F7C #7C4A1F #227C1F

square

#1F517C #781F7C #7C4A1F #227C1F

split-complementary

#1F517C #7C1F22 #7C781F

monochromatic

#07111A #13314B #1F517C #2B71AD #4590D0

Accessibility & contrast

On white

8.31

#1F517C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#1F517C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F517C

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F517C	#FFFFFF	#000000	##FFFFFF
##1F517C	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D537E

Deuteranopia (green-blind)

#304A7B

Tritanopia (blue-blind)

#005B60

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f517c;
/* rgb */ color: rgb(31, 81, 124);
/* oklch */ color: oklch(42.3% 0.089 247.8);

Tailwind

colors: {
  custom: {
    50: '#6881a2',
    500: '#1f517c',
    950: '#000000',
  },
}

SCSS

$custom: #1f517c;
$custom-light: #6881a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f517c",
  "rgb": {
    "r": 31,
    "g": 81,
    "b": 124
  },
  "hsl": {
    "h": 207.742,
    "s": 60,
    "l": 30.392
  },
  "oklch": {
    "l": 0.42304,
    "c": 0.08937,
    "h": 247.8
  },
  "luminance": 0.07631
}

Semantic roles & 50–950 ramp

primary

#1F517C

secondary

#AF7748

accent

#8E45E3

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1F517C

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

Preview Lab → · Contrast checker → · Palette generator →