#1B645A#1B645A

#1B645A is a mid, moderate teal. Relative luminance 0.101; OKLCH L 45.6% C 0.072 H 182.0°. Best body text is #FFFFFF at 6.96:1 contrast (WCAG AA passes).

Color values

HEX	#1B645A
RGB	rgb(27, 100, 90)
HSL	hsl(172, 57%, 25%)
HSV	hsv(172, 73%, 39%)
CMYK	cmyk(73%, 0%, 10%, 60.8%)
CIE-LAB	lab(37.99, -24.62, -0.77)
CIE-LCH	lch(37.99, 24.63, 181.80°)
OKLab	oklab(45.65% -0.0718 -0.0025)
OKLCH	oklch(45.65% 0.072 182)
XYZ	xyz(6.8537, 10.0848, 11.2562)
Luminance	0.1009 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B645A #641B25

analogous

#1B6436 #1B645A #1B4964

triadic

#1B645A #5A1B64 #645A1B

tetradic

#1B645A #361B64 #641B25 #49641B

square

#1B645A #361B64 #641B25 #49641B

split-complementary

#1B645A #641B49 #64361B

monochromatic

#071816 #0E342F #1B645A #289485 #35C4B1

Accessibility & contrast

On white

6.96

#1B645A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#1B645A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B645A

6.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B645A	#FFFFFF	#000000	##FFFFFF
##1B645A	1.00	6.96	3.02	6.96
#FFFFFF	6.96	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F5E5A

Deuteranopia (green-blind)

#55565B

Tritanopia (blue-blind)

#006661

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #1b645a;
/* rgb */ color: rgb(27, 100, 90);
/* oklch */ color: oklch(45.6% 0.072 182.0);

Tailwind

colors: {
  custom: {
    50: '#639088',
    500: '#1b645a',
    950: '#000000',
  },
}

SCSS

$custom: #1b645a;
$custom-light: #639088;
$custom-dark: #000000;

JSON

{
  "hex": "#1b645a",
  "rgb": {
    "r": 27,
    "g": 100,
    "b": 90
  },
  "hsl": {
    "h": 171.781,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.4565,
    "c": 0.07185,
    "h": 182
  },
  "luminance": 0.10086
}

Semantic roles & 50–950 ramp

primary

#1B645A

secondary

#99414D

accent

#475CE1

background

#F6F8F8

surface

#EBF0EF

border

#C6CBCA

text

#060C0B

muted

#7A7D7C

Preview Lab

Preview with #1B645A

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

Preview Lab → · Contrast checker → · Palette generator →