#1F583A#1F583A

#1F583A is a dark, moderate green. Relative luminance 0.076; OKLCH L 41.4% C 0.078 H 157.2°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#1F583A
RGB	rgb(31, 88, 58)
HSL	hsl(148, 48%, 23%)
HSV	hsv(148, 65%, 35%)
CMYK	cmyk(64.8%, 0%, 34.1%, 65.5%)
CIE-LAB	lab(33.08, -26.52, 12.02)
CIE-LCH	lch(33.08, 29.11, 155.63°)
OKLab	oklab(41.39% -0.0722 0.0304)
OKLCH	oklch(41.39% 0.078 157.2)
XYZ	xyz(4.8181, 7.5758, 5.2105)
Luminance	0.0758 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F583A #581F3D

analogous

#20581F #1F583A #1F5856

triadic

#1F583A #3A1F58 #583A1F

tetradic

#1F583A #1F2058 #581F3D #58561F

square

#1F583A #1F2058 #581F3D #58561F

split-complementary

#1F583A #561F58 #581F20

monochromatic

#08170F #0F2B1C #1F583A #2F8558 #3FB376

Accessibility & contrast

On white

8.35

#1F583A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#1F583A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F583A

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F583A	#FFFFFF	#000000	##FFFFFF
##1F583A	1.00	8.35	2.52	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575138

Deuteranopia (green-blind)

#504C3C

Tritanopia (blue-blind)

#075750

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f583a;
/* rgb */ color: rgb(31, 88, 58);
/* oklch */ color: oklch(41.4% 0.078 157.2);

Tailwind

colors: {
  custom: {
    50: '#618870',
    500: '#1f583a',
    950: '#000000',
  },
}

SCSS

$custom: #1f583a;
$custom-light: #618870;
$custom-dark: #000000;

JSON

{
  "hex": "#1f583a",
  "rgb": {
    "r": 31,
    "g": 88,
    "b": 58
  },
  "hsl": {
    "h": 148.421,
    "s": 47.899,
    "l": 23.333
  },
  "oklch": {
    "l": 0.41391,
    "c": 0.07838,
    "h": 157.2
  },
  "luminance": 0.07576
}

Semantic roles & 50–950 ramp

primary

#1F583A

secondary

#8D466B

accent

#5097D7

background

#F6F8F6

surface

#EBEFEC

border

#C6CAC7

text

#050B07

muted

#7A7C7A

Preview Lab

Preview with #1F583A

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

Preview Lab → · Contrast checker → · Palette generator →