#18A548
Closest named color: Medium Green (#39AD48). oklch(63.2% 0.174 148.5), rgb(24, 165, 72).
Aa
Black text reads best on this color (6.51:1).
About this color
#18A548 is a medium-light, vivid green. In OKLCH its lightness is 63%, its chroma 0.174 and its hue 149°. 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 6.51:1.
| Hue family | Greens |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.174) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 6.51:1 |
| White text | 3.22:1 |
Values
| HEX | #18A548 |
| RGB | rgb(24, 165, 72) |
| HSL | hsl(140, 75%, 37%) |
| OKLCH | oklch(63.2% 0.174 148.5) |
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 #18A548 | 3.22:1 | AA large text | Lc -64.3 | Content text, not long reading |
| Black text on #18A548 | 6.51:1 | AA | Lc 45.2 | Large or bold text, headings |
| #18A548 text on white | 3.22:1 | AA large text | Lc 58.9 | Large or bold text, headings |
| #18A548 text on black | 6.51:1 | 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
#9BD0A2
oklch(80.8% 0.085 148.3)
-
Step 400
400
#5DB86F
oklch(70.8% 0.137 148.4)
-
Step 500
500 (this color)
#18A548
oklch(63.2% 0.174 148.5)
-
Step 600
600
#008B38
oklch(55.6% 0.159 148.5)
-
Step 700
700
#00752E
oklch(49.1% 0.14 148.5)
-
Step 800
800
#006024
oklch(42.7% 0.122 148.4)
-
Step 900
900
#00501D
oklch(37.6% 0.108 148.5)
-
Step 950
950
#042F11
oklch(26.8% 0.071 149)
#18A548 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) | #A7963F | 0.139 |
| Deuteranopia (no green cones) | #988B4F | 0.138 |
| Tritanopia (no blue cones) | #00A290 | 0.099 |
| Achromatopsia (no color) | #8F8F8F | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18A548
#18A548
oklch(63.2% 0.174 148.5)
- #C05DBD
#C05DBD
oklch(63.2% 0.173 328.5)
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 #18A548, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.030
- Mid Green #50A747 ΔE 0.032
- Kelly Green #02AB2E ΔE 0.033
- Grass Green #3F9B0B ΔE 0.041
- Grassy Green #419C03 ΔE 0.041
- Shamrock #01B44C ΔE 0.043
- Jade Green #2BAF6A ΔE 0.046
- Seaweed Green #35AD6B ΔE 0.047
Use #18A548 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.