#1B535B#1B535B

#1B535B is a dark, muted teal. Relative luminance 0.072; OKLCH L 41.0% C 0.059 H 208.4°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#1B535B
RGB	rgb(27, 83, 91)
HSL	hsl(188, 54%, 23%)
HSV	hsv(188, 70%, 36%)
CMYK	cmyk(70.3%, 8.8%, 0%, 64.3%)
CIE-LAB	lab(32.20, -15.16, -10.03)
CIE-LCH	lch(32.20, 18.17, 213.49°)
OKLab	oklab(40.97% -0.0515 -0.0278)
OKLCH	oklch(40.97% 0.059 208.4)
XYZ	xyz(5.4328, 7.1743, 10.9940)
Luminance	0.0717 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B535B #5B231B

analogous

#1B5B43 #1B535B #1B335B

triadic

#1B535B #5B1B53 #535B1B

tetradic

#1B535B #431B5B #5B231B #335B1B

square

#1B535B #431B5B #5B231B #335B1B

split-complementary

#1B535B #5B1B33 #5B431B

monochromatic

#071618 #0D282C #1B535B #297E8A #37A9B9

Accessibility & contrast

On white

8.62

#1B535B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#1B535B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B535B

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B535B	#FFFFFF	#000000	##FFFFFF
##1B535B	1.00	8.62	2.43	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B505C

Deuteranopia (green-blind)

#42495B

Tritanopia (blue-blind)

#005755

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b535b;
/* rgb */ color: rgb(27, 83, 91);
/* oklch */ color: oklch(41.0% 0.059 208.4);

Tailwind

colors: {
  custom: {
    50: '#618389',
    500: '#1b535b',
    950: '#000000',
  },
}

SCSS

$custom: #1b535b;
$custom-light: #618389;
$custom-dark: #000000;

JSON

{
  "hex": "#1b535b",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 91
  },
  "hsl": {
    "h": 187.5,
    "s": 54.237,
    "l": 23.137
  },
  "oklch": {
    "l": 0.40965,
    "c": 0.0585,
    "h": 208.4
  },
  "luminance": 0.07175
}

Semantic roles & 50–950 ramp

primary

#1B535B

secondary

#914B41

accent

#5D4ADE

background

#F6F8F8

surface

#EBEFF0

border

#C6CACB

text

#050A0B

muted

#7A7C7C

Preview Lab

Preview with #1B535B

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

Preview Lab → · Contrast checker → · Palette generator →