#1B4E5C#1B4E5C

#1B4E5C is a dark, muted cyan. Relative luminance 0.065; OKLCH L 39.6% C 0.058 H 219.2°. Best body text is #FFFFFF at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#1B4E5C
RGB	rgb(27, 78, 92)
HSL	hsl(193, 55%, 23%)
HSV	hsv(193, 71%, 36%)
CMYK	cmyk(70.7%, 15.2%, 0%, 63.9%)
CIE-LAB	lab(30.53, -11.88, -13.20)
CIE-LCH	lch(30.53, 17.76, 228.02°)
OKLab	oklab(39.64% -0.045 -0.0368)
OKLCH	oklch(39.64% 0.058 219.2)
XYZ	xyz(5.1074, 6.4539, 11.0997)
Luminance	0.0645 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4E5C #5C291B

analogous

#1B5C49 #1B4E5C #1B2D5C

triadic

#1B4E5C #5C1B4E #4E5C1B

tetradic

#1B4E5C #491B5C #5C291B #2D5C1B

square

#1B4E5C #491B5C #5C291B #2D5C1B

split-complementary

#1B4E5C #5C1B2D #5C491B

monochromatic

#071418 #0D262D #1B4E5C #29768B #379EBB

Accessibility & contrast

On white

9.17

#1B4E5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#1B4E5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E5C

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4E5C	#FFFFFF	#000000	##FFFFFF
##1B4E5C	1.00	9.17	2.29	9.17
#FFFFFF	9.17	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#454C5D

Deuteranopia (green-blind)

#3C455C

Tritanopia (blue-blind)

#005352

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b4e5c;
/* rgb */ color: rgb(27, 78, 92);
/* oklch */ color: oklch(39.6% 0.058 219.2);

Tailwind

colors: {
  custom: {
    50: '#607f8a',
    500: '#1b4e5c',
    950: '#000000',
  },
}

SCSS

$custom: #1b4e5c;
$custom-light: #607f8a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4e5c",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 92
  },
  "hsl": {
    "h": 192.923,
    "s": 54.622,
    "l": 23.333
  },
  "oklch": {
    "l": 0.39636,
    "c": 0.05816,
    "h": 219.2
  },
  "luminance": 0.06454
}

Semantic roles & 50–950 ramp

primary

#1B4E5C

secondary

#925241

accent

#6A4ADE

background

#F6F7F8

surface

#EBEEF0

border

#C6C9CB

text

#050A0B

muted

#7A7C7C

Preview Lab

Preview with #1B4E5C

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

Preview Lab → · Contrast checker → · Palette generator →