#1F9B31#1F9B31

#1F9B31 is a mid, vivid green. Relative luminance 0.240; OKLCH L 60.3% C 0.178 H 144.7°. Best body text is #000000 at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#1F9B31
RGB	rgb(31, 155, 49)
HSL	hsl(129, 67%, 36%)
HSV	hsv(129, 80%, 61%)
CMYK	cmyk(80%, 0%, 68.4%, 39.2%)
CIE-LAB	lab(56.04, -53.97, 44.66)
CIE-LCH	lch(56.04, 70.05, 140.39°)
OKLab	oklab(60.33% -0.1457 0.103)
OKLCH	oklch(60.33% 0.178 144.7)
XYZ	xyz(12.8399, 23.9542, 6.8521)
Luminance	0.2396 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F9B31 #9B1F89

analogous

#4B9B1F #1F9B31 #1F9B6F

triadic

#1F9B31 #311F9B #9B311F

tetradic

#1F9B31 #1F4B9B #9B1F89 #9B6F1F

square

#1F9B31 #1F4B9B #9B1F89 #9B6F1F

split-complementary

#1F9B31 #6F1F9B #9B1F4B

monochromatic

#0B3511 #156821 #1F9B31 #29CE41 #57DD6B

Accessibility & contrast

On white

3.63

#1F9B31 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.79

#1F9B31 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1F9B31

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F9B31	#FFFFFF	#000000	##000000
##1F9B31	1.00	3.63	5.79	5.79
#FFFFFF	3.63	1.00	21.00	21.00
#000000	5.79	21.00	1.00	1.00
##000000	5.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9E8C23

Deuteranopia (green-blind)

#90833B

Tritanopia (blue-blind)

#009785

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #1f9b31;
/* rgb */ color: rgb(31, 155, 49);
/* oklch */ color: oklch(60.3% 0.178 144.7);

Tailwind

colors: {
  custom: {
    50: '#72ba6e',
    500: '#1f9b31',
    950: '#000000',
  },
}

SCSS

$custom: #1f9b31;
$custom-light: #72ba6e;
$custom-dark: #000000;

JSON

{
  "hex": "#1f9b31",
  "rgb": {
    "r": 31,
    "g": 155,
    "b": 49
  },
  "hsl": {
    "h": 128.71,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.60329,
    "c": 0.17842,
    "h": 144.7
  },
  "luminance": 0.23956
}

Semantic roles & 50–950 ramp

primary

#1F9B31

secondary

#C155B1

accent

#3ED1EA

background

#F7FBF6

surface

#EDF6EC

border

#C8D0C7

text

#091207

muted

#7B817A

Preview Lab

Preview with #1F9B31

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

Preview Lab → · Contrast checker → · Palette generator →