#1B5C7B#1B5C7B

#1B5C7B is a dark, moderate cyan. Relative luminance 0.093; OKLCH L 44.9% C 0.081 H 233.8°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#1B5C7B
RGB	rgb(27, 92, 123)
HSL	hsl(199, 64%, 29%)
HSV	hsv(199, 78%, 48%)
CMYK	cmyk(78%, 25.2%, 0%, 51.8%)
CIE-LAB	lab(36.59, -8.89, -23.25)
CIE-LCH	lch(36.59, 24.89, 249.06°)
OKLab	oklab(44.94% -0.0479 -0.0655)
OKLCH	oklch(44.94% 0.081 233.8)
XYZ	xyz(7.8529, 9.3164, 20.1194)
Luminance	0.0932 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5C7B #7B3A1B

analogous

#1B7B6A #1B5C7B #1B2C7B

triadic

#1B5C7B #7B1B5C #5C7B1B

tetradic

#1B5C7B #6A1B7B #7B3A1B #2C7B1B

square

#1B5C7B #6A1B7B #7B3A1B #2C7B1B

split-complementary

#1B5C7B #7B1B2C #7B6A1B

monochromatic

#061319 #103649 #1B5C7B #2682AD #3CA3D4

Accessibility & contrast

On white

7.33

#1B5C7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#1B5C7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5C7B

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5C7B	#FFFFFF	#000000	##FFFFFF
##1B5C7B	1.00	7.33	2.86	7.33
#FFFFFF	7.33	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D5B7C

Deuteranopia (green-blind)

#40527B

Tritanopia (blue-blind)

#006466

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1b5c7b;
/* rgb */ color: rgb(27, 92, 123);
/* oklch */ color: oklch(44.9% 0.081 233.8);

Tailwind

colors: {
  custom: {
    50: '#678aa1',
    500: '#1b5c7b',
    950: '#000000',
  },
}

SCSS

$custom: #1b5c7b;
$custom-light: #678aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5c7b",
  "rgb": {
    "r": 27,
    "g": 92,
    "b": 123
  },
  "hsl": {
    "h": 199.375,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.44935,
    "c": 0.08115,
    "h": 233.8
  },
  "luminance": 0.09317
}

Semantic roles & 50–950 ramp

primary

#1B5C7B

secondary

#AF6643

accent

#7641E7

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#070B0F

muted

#7A7C7E

Preview Lab

Preview with #1B5C7B

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

Preview Lab → · Contrast checker → · Palette generator →