#18A545
Closest named color: Medium Green (#39AD48). oklch(63.2% 0.176 147.9), rgb(24, 165, 69).
Aa
Black text reads best on this color (6.50:1).
About this color
#18A545 is a medium-light, vivid green. In OKLCH its lightness is 63%, its chroma 0.176 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.030 away. Black text reads best on it, at 6.50:1.
| Hue family | Greens |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.176) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 6.50:1 |
| White text | 3.22:1 |
Values
| HEX | #18A545 |
| RGB | rgb(24, 165, 69) |
| HSL | hsl(139, 75%, 37%) |
| OKLCH | oklch(63.2% 0.176 147.9) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #18A545 | 3.22:1 | AA large text | Lc -64.3 | Content text, not long reading |
| Black text on #18A545 | 6.50:1 | AA | Lc 45.1 | Large or bold text, headings |
| #18A545 text on white | 3.22:1 | AA large text | Lc 58.9 | Large or bold text, headings |
| #18A545 text on black | 6.50:1 | AA | Lc -42.8 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F1F8F1
oklch(97.2% 0.012 145.5)
-
Step 100
100
#DFEFE1
oklch(93.6% 0.025 149.1)
-
Step 200
200
#C5E2C8
oklch(88.4% 0.047 148.1)
-
Step 300
300
#9BD0A1
oklch(80.8% 0.086 147.7)
-
Step 400
400
#5DB86E
oklch(70.8% 0.138 148.1)
-
Step 500
500 (this color)
#18A545
oklch(63.2% 0.176 147.9)
-
Step 600
600
#008B35
oklch(55.5% 0.161 147.8)
-
Step 700
700
#00752C
oklch(49% 0.142 148)
-
Step 800
800
#006022
oklch(42.6% 0.124 147.8)
-
Step 900
900
#00501B
oklch(37.6% 0.109 147.8)
-
Step 950
950
#043010
oklch(27.2% 0.073 148.1)
#18A545 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #A7963C | 0.139 |
| Deuteranopia (no green cones) | #988B4D | 0.138 |
| Tritanopia (no blue cones) | #00A190 | 0.104 |
| Achromatopsia (no color) | #8F8F8F | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18A545
#18A545
oklch(63.2% 0.176 147.9)
- #C05CBF
#C05CBF
oklch(63.2% 0.177 327.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #18A545, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.030
- Kelly Green #02AB2E ΔE 0.030
- Mid Green #50A747 ΔE 0.033
- Grass Green #3F9B0B ΔE 0.039
- Grassy Green #419C03 ΔE 0.039
- Shamrock #01B44C ΔE 0.043
- Jade Green #2BAF6A ΔE 0.048
- Seaweed Green #35AD6B ΔE 0.050
Use #18A545 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.