#1B517C#1B517C

#1B517C is a dark, moderate cyan. Relative luminance 0.076; OKLCH L 42.2% C 0.091 H 246.5°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#1B517C
RGB	rgb(27, 81, 124)
HSL	hsl(207, 64%, 30%)
HSV	hsv(207, 78%, 49%)
CMYK	cmyk(78.2%, 34.7%, 0%, 51.4%)
CIE-LAB	lab(33.08, -1.64, -29.37)
CIE-LCH	lch(33.08, 29.42, 266.80°)
OKLab	oklab(42.17% -0.0362 -0.0834)
OKLCH	oklch(42.17% 0.091 246.5)
XYZ	xyz(7.0311, 7.5723, 20.1559)
Luminance	0.0757 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B517C #7C461B

analogous

#1B7C77 #1B517C #1B217C

triadic

#1B517C #7C1B51 #517C1B

tetradic

#1B517C #771B7C #7C461B #217C1B

square

#1B517C #771B7C #7C461B #217C1B

split-complementary

#1B517C #7C1B21 #7C771B

monochromatic

#051019 #10304A #1B517C #2672AE #3D91D5

Accessibility & contrast

On white

8.35

#1B517C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1B517C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B517C

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B517C	#FFFFFF	#000000	##FFFFFF
##1B517C	1.00	8.35	2.51	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D537E

Deuteranopia (green-blind)

#2F4A7B

Tritanopia (blue-blind)

#005B60

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b517c;
/* rgb */ color: rgb(27, 81, 124);
/* oklch */ color: oklch(42.2% 0.091 246.5);

Tailwind

colors: {
  custom: {
    50: '#6681a2',
    500: '#1b517c',
    950: '#000000',
  },
}

SCSS

$custom: #1b517c;
$custom-light: #6681a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b517c",
  "rgb": {
    "r": 27,
    "g": 81,
    "b": 124
  },
  "hsl": {
    "h": 206.598,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.4217,
    "c": 0.09093,
    "h": 246.5
  },
  "luminance": 0.07573
}

Semantic roles & 50–950 ramp

primary

#1B517C

secondary

#B07343

accent

#8A41E7

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B517C

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

Preview Lab → · Contrast checker → · Palette generator →