#1B645B#1B645B

#1B645B is a mid, moderate teal. Relative luminance 0.101; OKLCH L 45.7% C 0.071 H 183.2°. Best body text is #FFFFFF at 6.95:1 contrast (WCAG AA passes).

Color values

HEX	#1B645B
RGB	rgb(27, 100, 91)
HSL	hsl(173, 57%, 25%)
HSV	hsv(173, 73%, 39%)
CMYK	cmyk(73%, 0%, 9%, 60.8%)
CIE-LAB	lab(38.02, -24.32, -1.34)
CIE-LCH	lch(38.02, 24.36, 183.16°)
OKLab	oklab(45.68% -0.0713 -0.004)
OKLCH	oklch(45.68% 0.071 183.2)
XYZ	xyz(6.8966, 10.1019, 11.4819)
Luminance	0.1010 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B645B #641B24

analogous

#1B6437 #1B645B #1B4864

triadic

#1B645B #5B1B64 #645B1B

tetradic

#1B645B #371B64 #641B24 #48641B

square

#1B645B #371B64 #641B24 #48641B

split-complementary

#1B645B #641B48 #64371B

monochromatic

#071816 #0E342F #1B645B #289487 #35C4B3

Accessibility & contrast

On white

6.95

#1B645B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#1B645B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B645B

6.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B645B	#FFFFFF	#000000	##FFFFFF
##1B645B	1.00	6.95	3.02	6.95
#FFFFFF	6.95	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F5E5B

Deuteranopia (green-blind)

#55565C

Tritanopia (blue-blind)

#006661

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #1b645b;
/* rgb */ color: rgb(27, 100, 91);
/* oklch */ color: oklch(45.7% 0.071 183.2);

Tailwind

colors: {
  custom: {
    50: '#639089',
    500: '#1b645b',
    950: '#000000',
  },
}

SCSS

$custom: #1b645b;
$custom-light: #639089;
$custom-dark: #000000;

JSON

{
  "hex": "#1b645b",
  "rgb": {
    "r": 27,
    "g": 100,
    "b": 91
  },
  "hsl": {
    "h": 172.603,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.45685,
    "c": 0.07141,
    "h": 183.2
  },
  "luminance": 0.10103
}

Semantic roles & 50–950 ramp

primary

#1B645B

secondary

#99414C

accent

#475AE1

background

#F6F8F8

surface

#EBF0F0

border

#C6CBCB

text

#060C0B

muted

#7A7D7C

Preview Lab

Preview with #1B645B

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

Preview Lab → · Contrast checker → · Palette generator →