#1B517A#1B517A

#1B517A is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 42.0% C 0.088 H 245.3°. Best body text is #FFFFFF at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#1B517A
RGB	rgb(27, 81, 122)
HSL	hsl(206, 64%, 29%)
HSV	hsv(206, 78%, 48%)
CMYK	cmyk(77.9%, 33.6%, 0%, 52.2%)
CIE-LAB	lab(32.97, -2.43, -28.30)
CIE-LCH	lch(32.97, 28.40, 265.10°)
OKLab	oklab(42.05% -0.0369 -0.0803)
OKLCH	oklch(42.05% 0.088 245.3)
XYZ	xyz(6.9059, 7.5222, 19.4965)
Luminance	0.0752 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B517A #7A441B

analogous

#1B7A74 #1B517A #1B227A

triadic

#1B517A #7A1B51 #517A1B

tetradic

#1B517A #741B7A #7A441B #227A1B

square

#1B517A #741B7A #7A441B #227A1B

split-complementary

#1B517A #7A1B22 #7A741B

monochromatic

#061119 #103048 #1B517A #2672AC #3C92D4

Accessibility & contrast

On white

8.38

#1B517A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#1B517A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B517A

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B517A	#FFFFFF	#000000	##FFFFFF
##1B517A	1.00	8.38	2.50	8.38
#FFFFFF	8.38	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E527C

Deuteranopia (green-blind)

#314A79

Tritanopia (blue-blind)

#005B60

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b517a;
/* rgb */ color: rgb(27, 81, 122);
/* oklch */ color: oklch(42.0% 0.088 245.3);

Tailwind

colors: {
  custom: {
    50: '#6681a0',
    500: '#1b517a',
    950: '#000000',
  },
}

SCSS

$custom: #1b517a;
$custom-light: #6681a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b517a",
  "rgb": {
    "r": 27,
    "g": 81,
    "b": 122
  },
  "hsl": {
    "h": 205.895,
    "s": 63.758,
    "l": 29.216
  },
  "oklch": {
    "l": 0.42049,
    "c": 0.08834,
    "h": 245.3
  },
  "luminance": 0.07523
}

Semantic roles & 50–950 ramp

primary

#1B517A

secondary

#AE7143

accent

#8941E7

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#070A0F

muted

#7A7C7E

Preview Lab

Preview with #1B517A

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

Preview Lab → · Contrast checker → · Palette generator →