#18B04E
Closest named color: Shamrock (#01B44C). oklch(66.3% 0.182 148.7), rgb(24, 176, 78).
Aa
Black text reads best on this color (7.35:1).
About this color
#18B04E is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.182 and its hue 149°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.013 away. Black text reads best on it, at 7.35:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.182) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.35:1 |
| White text | 2.85:1 |
Values
| HEX | #18B04E |
| RGB | rgb(24, 176, 78) |
| HSL | hsl(141, 76%, 39%) |
| OKLCH | oklch(66.3% 0.182 148.7) |
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 #18B04E | 2.85:1 | Fails | Lc -59.3 | Large or bold text, headings |
| Black text on #18B04E | 7.35:1 | AAA | Lc 50.0 | Large or bold text, headings |
| #18B04E text on white | 2.85:1 | Fails | Lc 54.1 | Large or bold text, headings |
| #18B04E text on black | 7.35:1 | AAA | Lc -47.8 | Large or bold text, headings |
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
#F0F8F1
oklch(97.1% 0.013 149.3)
-
Step 100
100
#DFEFE1
oklch(93.6% 0.025 149.1)
-
Step 200
200
#C4E3C8
oklch(88.6% 0.049 148.8)
-
Step 300
300
#98D1A1
oklch(80.9% 0.089 148.9)
-
Step 400
400
#58B96D
oklch(70.8% 0.143 148.7)
-
Step 500
500 (this color)
#18B04E
oklch(66.3% 0.182 148.7)
-
Step 600
600
#008B39
oklch(55.6% 0.158 148.7)
-
Step 700
700
#00752F
oklch(49.1% 0.139 148.8)
-
Step 800
800
#006025
oklch(42.7% 0.121 148.7)
-
Step 900
900
#00501E
oklch(37.6% 0.107 148.8)
-
Step 950
950
#01300F
oklch(27% 0.076 148.5)
#18B04E 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) | #B2A045 | 0.146 |
| Deuteranopia (no green cones) | #A29456 | 0.146 |
| Tritanopia (no blue cones) | #00AC9A | 0.105 |
| Achromatopsia (no color) | #999999 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18B04E
#18B04E
oklch(66.3% 0.182 148.7)
- #CD63C9
#CD63C9
oklch(66.2% 0.182 328.8)
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 #18B04E, closest first.
No curated palette has a color within ΔE 0.04 of #18B04E.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.013
- Medium Green #39AD48 ΔE 0.013
- Kelly Green #02AB2E ΔE 0.030
- Mid Green #50A747 ΔE 0.034
- Cool Green #33B864 ΔE 0.034
- Jade Green #2BAF6A ΔE 0.036
- Dark Pastel Green #56AE57 ΔE 0.037
- Grass #5CAC2D ΔE 0.039
Use #18B04E 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.