#1B583C#1B583C

#1B583C is a dark, moderate teal. Relative luminance 0.075; OKLCH L 41.3% C 0.078 H 159.8°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#1B583C
RGB	rgb(27, 88, 60)
HSL	hsl(152, 53%, 23%)
HSV	hsv(152, 69%, 35%)
CMYK	cmyk(69.3%, 0%, 31.8%, 65.5%)
CIE-LAB	lab(33.00, -26.96, 10.65)
CIE-LCH	lch(33.00, 28.98, 158.44°)
OKLab	oklab(41.3% -0.0736 0.0271)
OKLCH	oklch(41.3% 0.078 159.8)
XYZ	xyz(4.7569, 7.5382, 5.4784)
Luminance	0.0754 (WCAG relative)
Temperature	neutral
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B583C #581B37

analogous

#1B581E #1B583C #1B5558

triadic

#1B583C #3C1B58 #583C1B

tetradic

#1B583C #1E1B58 #581B37 #55581B

square

#1B583C #1E1B58 #581B37 #55581B

split-complementary

#1B583C #581B55 #581E1B

monochromatic

#071710 #0D291C #1B583C #29875C #38B67C

Accessibility & contrast

On white

8.37

#1B583C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1B583C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B583C

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B583C	#FFFFFF	#000000	##FFFFFF
##1B583C	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#57513A

Deuteranopia (green-blind)

#4F4B3E

Tritanopia (blue-blind)

#005851

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b583c;
/* rgb */ color: rgb(27, 88, 60);
/* oklch */ color: oklch(41.3% 0.078 159.8);

Tailwind

colors: {
  custom: {
    50: '#5f8871',
    500: '#1b583c',
    950: '#000000',
  },
}

SCSS

$custom: #1b583c;
$custom-light: #5f8871;
$custom-dark: #000000;

JSON

{
  "hex": "#1b583c",
  "rgb": {
    "r": 27,
    "g": 88,
    "b": 60
  },
  "hsl": {
    "h": 152.459,
    "s": 53.043,
    "l": 22.549
  },
  "oklch": {
    "l": 0.41304,
    "c": 0.07844,
    "h": 159.8
  },
  "luminance": 0.07539
}

Semantic roles & 50–950 ramp

primary

#1B583C

secondary

#8E4164

accent

#4B8EDC

background

#F5F8F6

surface

#EAEFEC

border

#C6CAC7

text

#050B07

muted

#797C7A

Preview Lab

Preview with #1B583C

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

Preview Lab → · Contrast checker → · Palette generator →