#18BF3F
Closest named color: Shamrock Green (#02C14D). oklch(70.2% 0.211 145.6), rgb(24, 191, 63).
Aa
Black text reads best on this color (8.56:1).
About this color
#18BF3F is a medium-light, vivid green. In OKLCH its lightness is 70%, its chroma 0.211 and its hue 146°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock Green (#02C14D), ΔE 0.011 away. Black text reads best on it, at 8.56:1.
| Hue family | Greens |
| Lightness | medium-light (70%) |
| Chroma | vivid (0.211) |
| Temperature | in between |
| Nearest name | Shamrock Green (#02C14D) |
| Black text | 8.56:1 |
| White text | 2.45:1 |
Values
| HEX | #18BF3F |
| RGB | rgb(24, 191, 63) |
| HSL | hsl(134, 78%, 42%) |
| OKLCH | oklch(70.2% 0.211 145.6) |
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 #18BF3F | 2.45:1 | Fails | Lc -52.5 | Large or bold text, headings |
| Black text on #18BF3F | 8.56:1 | AAA | Lc 56.4 | Large or bold text, headings |
| #18BF3F text on white | 2.45:1 | Fails | Lc 47.6 | Large or bold text, headings |
| #18BF3F text on black | 8.56:1 | AAA | Lc -54.5 | 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 400.
-
Step 50
50
#EEF9EE
oklch(97.1% 0.019 145.4)
-
Step 100
100
#DBF1DB
oklch(93.6% 0.037 145.3)
-
Step 200
200
#BBE7BC
oklch(88.6% 0.074 145.5)
-
Step 300
300
#87D78B
oklch(80.8% 0.132 145.4)
-
Step 400
400 (this color)
#18BF3F
oklch(70.2% 0.211 145.6)
-
Step 500
500
#00A631
oklch(63.1% 0.195 145.5)
-
Step 600
600
#008C28
oklch(55.7% 0.172 145.6)
-
Step 700
700
#007620
oklch(49.2% 0.152 145.5)
-
Step 800
800
#006119
oklch(42.8% 0.133 145.6)
-
Step 900
900
#005113
oklch(37.8% 0.117 145.5)
-
Step 950
950
#003008
oklch(26.9% 0.083 145.6)
#18BF3F 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) | #C2AD2E | 0.158 |
| Deuteranopia (no green cones) | #B1A14B | 0.158 |
| Tritanopia (no blue cones) | #00BAA5 | 0.130 |
| Achromatopsia (no color) | #A5A5A5 | 0.212 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18BF3F
#18BF3F
oklch(70.2% 0.211 145.6)
- #DE67E4
#DE67E4
oklch(70.2% 0.21 325.7)
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 #18BF3F, closest first.
No curated palette has a color within ΔE 0.04 of #18BF3F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock Green #02C14D ΔE 0.011
- Leafy Green #51B73B ΔE 0.031
- Frog Green #58BC08 ΔE 0.033
- Shamrock #01B44C ΔE 0.038
- Lime Green #32CD32 ΔE 0.045
- Algae Green #21C36F ΔE 0.049
- Cool Green #33B864 ΔE 0.049
- Medium Green #39AD48 ΔE 0.055
Use #18BF3F 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.