#1B583F#1B583F

#1B583F is a dark, moderate teal. Relative luminance 0.076; OKLCH L 41.4% C 0.075 H 162.5°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#1B583F
RGB	rgb(27, 88, 63)
HSL	hsl(155, 53%, 23%)
HSV	hsv(155, 69%, 35%)
CMYK	cmyk(69.3%, 0%, 28.4%, 65.5%)
CIE-LAB	lab(33.07, -26.21, 8.89)
CIE-LCH	lch(33.07, 27.68, 161.26°)
OKLab	oklab(41.39% -0.072 0.0227)
OKLCH	oklch(41.39% 0.075 162.5)
XYZ	xyz(4.8384, 7.5708, 5.9080)
Luminance	0.0757 (WCAG relative)
Temperature	neutral
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B583F #581B34

analogous

#1B5821 #1B583F #1B5258

triadic

#1B583F #3F1B58 #583F1B

tetradic

#1B583F #211B58 #581B34 #52581B

square

#1B583F #211B58 #581B34 #52581B

split-complementary

#1B583F #581B52 #58211B

monochromatic

#071711 #0D291D #1B583F #298761 #38B682

Accessibility & contrast

On white

8.35

#1B583F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1B583F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B583F

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B583F	#FFFFFF	#000000	##FFFFFF
##1B583F	1.00	8.35	2.51	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#57513E

Deuteranopia (green-blind)

#4E4B41

Tritanopia (blue-blind)

#005851

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b583f;
/* rgb */ color: rgb(27, 88, 63);
/* oklch */ color: oklch(41.4% 0.075 162.5);

Tailwind

colors: {
  custom: {
    50: '#5f8874',
    500: '#1b583f',
    950: '#000000',
  },
}

SCSS

$custom: #1b583f;
$custom-light: #5f8874;
$custom-dark: #000000;

JSON

{
  "hex": "#1b583f",
  "rgb": {
    "r": 27,
    "g": 88,
    "b": 63
  },
  "hsl": {
    "h": 155.41,
    "s": 53.043,
    "l": 22.549
  },
  "oklch": {
    "l": 0.41385,
    "c": 0.07549,
    "h": 162.5
  },
  "luminance": 0.07571
}

Semantic roles & 50–950 ramp

primary

#1B583F

secondary

#8E4160

accent

#4B87DC

background

#F5F8F7

surface

#EAEFED

border

#C6CAC8

text

#050B08

muted

#797C7B

Preview Lab

Preview with #1B583F

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

Preview Lab → · Contrast checker → · Palette generator →