#1B583D#1B583D

#1B583D is a dark, moderate teal. Relative luminance 0.075; OKLCH L 41.3% C 0.077 H 160.7°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#1B583D
RGB	rgb(27, 88, 61)
HSL	hsl(153, 53%, 23%)
HSV	hsv(153, 69%, 35%)
CMYK	cmyk(69.3%, 0%, 30.7%, 65.5%)
CIE-LAB	lab(33.03, -26.71, 10.06)
CIE-LCH	lch(33.03, 28.54, 159.35°)
OKLab	oklab(41.33% -0.0731 0.0256)
OKLCH	oklch(41.33% 0.077 160.7)
XYZ	xyz(4.7836, 7.5489, 5.6190)
Luminance	0.0755 (WCAG relative)
Temperature	neutral
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B583D #581B36

analogous

#1B581F #1B583D #1B5458

triadic

#1B583D #3D1B58 #583D1B

tetradic

#1B583D #1F1B58 #581B36 #54581B

square

#1B583D #1F1B58 #581B36 #54581B

split-complementary

#1B583D #581B54 #581F1B

monochromatic

#071710 #0D291D #1B583D #29875D #38B67E

Accessibility & contrast

On white

8.37

#1B583D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1B583D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B583D

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B583D	#FFFFFF	#000000	##FFFFFF
##1B583D	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)

#57513B

Deuteranopia (green-blind)

#4F4B3F

Tritanopia (blue-blind)

#005851

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b583d;
/* rgb */ color: rgb(27, 88, 61);
/* oklch */ color: oklch(41.3% 0.077 160.7);

Tailwind

colors: {
  custom: {
    50: '#5f8872',
    500: '#1b583d',
    950: '#000000',
  },
}

SCSS

$custom: #1b583d;
$custom-light: #5f8872;
$custom-dark: #000000;

JSON

{
  "hex": "#1b583d",
  "rgb": {
    "r": 27,
    "g": 88,
    "b": 61
  },
  "hsl": {
    "h": 153.443,
    "s": 53.043,
    "l": 22.549
  },
  "oklch": {
    "l": 0.4133,
    "c": 0.07744,
    "h": 160.7
  },
  "luminance": 0.07549
}

Semantic roles & 50–950 ramp

primary

#1B583D

secondary

#8E4163

accent

#4B8CDC

background

#F5F8F6

surface

#EAEFEC

border

#C6CAC7

text

#050B08

muted

#797C7B

Preview Lab

Preview with #1B583D

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

Preview Lab → · Contrast checker → · Palette generator →