#1B583E#1B583E

#1B583E is a dark, moderate teal. Relative luminance 0.076; OKLCH L 41.4% C 0.076 H 161.6°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#1B583E
RGB	rgb(27, 88, 62)
HSL	hsl(154, 53%, 23%)
HSV	hsv(154, 69%, 35%)
CMYK	cmyk(69.3%, 0%, 29.5%, 65.5%)
CIE-LAB	lab(33.05, -26.46, 9.48)
CIE-LCH	lch(33.05, 28.11, 160.29°)
OKLab	oklab(41.36% -0.0725 0.0242)
OKLCH	oklch(41.36% 0.076 161.6)
XYZ	xyz(4.8107, 7.5598, 5.7621)
Luminance	0.0756 (WCAG relative)
Temperature	neutral
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B583E #581B35

analogous

#1B581F #1B583E #1B5358

triadic

#1B583E #3E1B58 #583E1B

tetradic

#1B583E #1F1B58 #581B35 #53581B

square

#1B583E #1F1B58 #581B35 #53581B

split-complementary

#1B583E #581B53 #581F1B

monochromatic

#071710 #0D291D #1B583E #29875F #38B680

Accessibility & contrast

On white

8.36

#1B583E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1B583E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B583E

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B583E	#FFFFFF	#000000	##FFFFFF
##1B583E	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#57513D

Deuteranopia (green-blind)

#4E4B40

Tritanopia (blue-blind)

#005851

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b583e;
/* rgb */ color: rgb(27, 88, 62);
/* oklch */ color: oklch(41.4% 0.076 161.6);

Tailwind

colors: {
  custom: {
    50: '#5f8873',
    500: '#1b583e',
    950: '#000000',
  },
}

SCSS

$custom: #1b583e;
$custom-light: #5f8873;
$custom-dark: #000000;

JSON

{
  "hex": "#1b583e",
  "rgb": {
    "r": 27,
    "g": 88,
    "b": 62
  },
  "hsl": {
    "h": 154.426,
    "s": 53.043,
    "l": 22.549
  },
  "oklch": {
    "l": 0.41357,
    "c": 0.07645,
    "h": 161.6
  },
  "luminance": 0.0756
}

Semantic roles & 50–950 ramp

primary

#1B583E

secondary

#8E4162

accent

#4B89DC

background

#F5F8F6

surface

#EAEFEC

border

#C6CAC7

text

#050B08

muted

#797C7B

Preview Lab

Preview with #1B583E

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

Preview Lab → · Contrast checker → · Palette generator →