#1B4953#1B4953

#1B4953 is a dark, muted cyan. Relative luminance 0.056; OKLCH L 37.8% C 0.052 H 214.4°. Best body text is #FFFFFF at 9.88:1 contrast (WCAG AA passes).

Color values

HEX	#1B4953
RGB	rgb(27, 73, 83)
HSL	hsl(191, 51%, 22%)
HSV	hsv(191, 67%, 33%)
CMYK	cmyk(67.5%, 12%, 0%, 67.5%)
CIE-LAB	lab(28.44, -12.08, -10.62)
CIE-LCH	lch(28.44, 16.08, 221.32°)
OKLab	oklab(37.83% -0.0431 -0.0295)
OKLCH	oklch(37.83% 0.052 214.4)
XYZ	xyz(4.3952, 5.6222, 9.0355)
Luminance	0.0562 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4953 #53251B

analogous

#1B5341 #1B4953 #1B2D53

triadic

#1B4953 #531B49 #49531B

tetradic

#1B4953 #411B53 #53251B #2D531B

square

#1B4953 #411B53 #53251B #2D531B

split-complementary

#1B4953 #531B2D #53411B

monochromatic

#081417 #0C2025 #1B4953 #2A7281 #399AAF

Accessibility & contrast

On white

9.88

#1B4953 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#1B4953 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4953

9.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4953	#FFFFFF	#000000	##FFFFFF
##1B4953	1.00	9.88	2.12	9.88
#FFFFFF	9.88	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#424754

Deuteranopia (green-blind)

#3A4053

Tritanopia (blue-blind)

#004D4C

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b4953;
/* rgb */ color: rgb(27, 73, 83);
/* oklch */ color: oklch(37.8% 0.052 214.4);

Tailwind

colors: {
  custom: {
    50: '#5f7b83',
    500: '#1b4953',
    950: '#000000',
  },
}

SCSS

$custom: #1b4953;
$custom-light: #5f7b83;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4953",
  "rgb": {
    "r": 27,
    "g": 73,
    "b": 83
  },
  "hsl": {
    "h": 190.714,
    "s": 50.909,
    "l": 21.569
  },
  "oklch": {
    "l": 0.37834,
    "c": 0.0522,
    "h": 214.4
  },
  "luminance": 0.05623
}

Semantic roles & 50–950 ramp

primary

#1B4953

secondary

#894E41

accent

#674DDA

background

#F5F7F8

surface

#EAEEEF

border

#C6C9CA

text

#05090A

muted

#797B7C

Preview Lab

Preview with #1B4953

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

Preview Lab → · Contrast checker → · Palette generator →