#1F583B#1F583B

#1F583B is a dark, moderate green. Relative luminance 0.076; OKLCH L 41.4% C 0.077 H 158.0°. Best body text is #FFFFFF at 8.34:1 contrast (WCAG AA passes).

Color values

HEX	#1F583B
RGB	rgb(31, 88, 59)
HSL	hsl(149, 48%, 23%)
HSV	hsv(149, 65%, 35%)
CMYK	cmyk(64.8%, 0%, 33%, 65.5%)
CIE-LAB	lab(33.11, -26.29, 11.43)
CIE-LCH	lch(33.11, 28.66, 156.50°)
OKLab	oklab(41.42% -0.0717 0.029)
OKLCH	oklch(41.42% 0.077 158)
XYZ	xyz(4.8438, 7.5860, 5.3458)
Luminance	0.0759 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F583B #581F3C

analogous

#1F581F #1F583B #1F5857

triadic

#1F583B #3B1F58 #583B1F

tetradic

#1F583B #1F1F58 #581F3C #58571F

square

#1F583B #1F1F58 #581F3C #58571F

split-complementary

#1F583B #571F58 #581F1F

monochromatic

#08170F #0F2B1D #1F583B #2F8559 #3FB378

Accessibility & contrast

On white

8.34

#1F583B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#1F583B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F583B

8.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F583B	#FFFFFF	#000000	##FFFFFF
##1F583B	1.00	8.34	2.52	8.34
#FFFFFF	8.34	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575139

Deuteranopia (green-blind)

#4F4C3D

Tritanopia (blue-blind)

#065750

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f583b;
/* rgb */ color: rgb(31, 88, 59);
/* oklch */ color: oklch(41.4% 0.077 158.0);

Tailwind

colors: {
  custom: {
    50: '#618771',
    500: '#1f583b',
    950: '#000000',
  },
}

SCSS

$custom: #1f583b;
$custom-light: #618771;
$custom-dark: #000000;

JSON

{
  "hex": "#1f583b",
  "rgb": {
    "r": 31,
    "g": 88,
    "b": 59
  },
  "hsl": {
    "h": 149.474,
    "s": 47.899,
    "l": 23.333
  },
  "oklch": {
    "l": 0.41417,
    "c": 0.07733,
    "h": 158
  },
  "luminance": 0.07587
}

Semantic roles & 50–950 ramp

primary

#1F583B

secondary

#8D466A

accent

#5095D7

background

#F6F8F6

surface

#EBEFEC

border

#C6CAC7

text

#050B07

muted

#7A7C7A

Preview Lab

Preview with #1F583B

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

Preview Lab → · Contrast checker → · Palette generator →