#1FB440#1FB440

#1FB440 is a light, vivid green. Relative luminance 0.333; OKLCH L 67.3% C 0.197 H 145.9°. Best body text is #000000 at 7.66:1 contrast (WCAG AA passes).

Color values

HEX	#1FB440
RGB	rgb(31, 180, 64)
HSL	hsl(133, 71%, 41%)
HSV	hsv(133, 83%, 71%)
CMYK	cmyk(82.8%, 0%, 64.4%, 29.4%)
CIE-LAB	lab(64.40, -60.45, 47.39)
CIE-LCH	lch(64.40, 76.81, 141.91°)
OKLab	oklab(67.32% -0.1627 0.1104)
OKLCH	oklch(67.32% 0.197 145.9)
XYZ	xyz(17.8104, 33.3018, 10.3387)
Luminance	0.3330 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1FB440 #B41F93

analogous

#48B41F #1FB440 #1FB48B

triadic

#1FB440 #401FB4 #B4401F

tetradic

#1FB440 #1F48B4 #B41F93 #B48B1F

square

#1FB440 #1F48B4 #B41F93 #B48B1F

split-complementary

#1FB440 #8B1FB4 #B41F48

monochromatic

#0D4C1B #16802D #1FB440 #34DC59 #68E584

Accessibility & contrast

On white

2.74

#1FB440 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.66

#1FB440 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #1FB440

7.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1FB440	#FFFFFF	#000000	##000000
##1FB440	1.00	2.74	7.66	7.66
#FFFFFF	2.74	1.00	21.00	21.00
#000000	7.66	21.00	1.00	1.00
##000000	7.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7A332

Deuteranopia (green-blind)

#A7984A

Tritanopia (blue-blind)

#00AF9C

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #1fb440;
/* rgb */ color: rgb(31, 180, 64);
/* oklch */ color: oklch(67.3% 0.197 145.9);

Tailwind

colors: {
  custom: {
    50: '#77cc79',
    500: '#1fb440',
    950: '#000000',
  },
}

SCSS

$custom: #1fb440;
$custom-light: #77cc79;
$custom-dark: #000000;

JSON

{
  "hex": "#1fb440",
  "rgb": {
    "r": 31,
    "g": 180,
    "b": 64
  },
  "hsl": {
    "h": 133.289,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.67321,
    "c": 0.19663,
    "h": 145.9
  },
  "luminance": 0.33304
}

Semantic roles & 50–950 ramp

primary

#1FB440

secondary

#CB64B4

accent

#3AC6ED

background

#F8FCF7

surface

#EFF9EE

border

#CAD2C9

text

#0B1309

muted

#7C827B

Preview Lab

Preview with #1FB440

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

Preview Lab → · Contrast checker → · Palette generator →