#18BF5F
Closest named color: Algae Green (#21C36F). oklch(70.6% 0.186 150.8), rgb(24, 191, 95).
Aa
Black text reads best on this color (8.65:1).
About this color
#18BF5F is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.186 and its hue 151°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Algae Green (#21C36F), ΔE 0.020 away. Black text reads best on it, at 8.65:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.186) |
| Temperature | in between |
| Nearest name | Algae Green (#21C36F) |
| Black text | 8.65:1 |
| White text | 2.42:1 |
Values
| HEX | #18BF5F |
| RGB | rgb(24, 191, 95) |
| HSL | hsl(146, 78%, 42%) |
| OKLCH | oklch(70.6% 0.186 150.8) |
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 #18BF5F | 2.42:1 | Fails | Lc -52.1 | Large or bold text, headings |
| Black text on #18BF5F | 8.65:1 | AAA | Lc 56.9 | Large or bold text, headings |
| #18BF5F text on white | 2.42:1 | Fails | Lc 47.1 | Large or bold text, headings |
| #18BF5F text on black | 8.65:1 | AAA | Lc -54.9 | 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
#EEF9F0
oklch(97.1% 0.017 151.1)
-
Step 100
100
#DBF1DF
oklch(93.7% 0.033 150.8)
-
Step 200
200
#BBE6C4
oklch(88.5% 0.064 151.2)
-
Step 300
300
#87D69A
oklch(80.9% 0.115 150.8)
-
Step 400
400 (this color)
#18BF5F
oklch(70.6% 0.186 150.8)
-
Step 500
500
#00A54F
oklch(63.2% 0.171 150.8)
-
Step 600
600
#008B41
oklch(55.7% 0.151 150.7)
-
Step 700
700
#007536
oklch(49.2% 0.133 150.8)
-
Step 800
800
#00602B
oklch(42.8% 0.116 150.8)
-
Step 900
900
#005023
oklch(37.7% 0.102 150.9)
-
Step 950
950
#003012
oklch(27% 0.073 150.7)
#18BF5F 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) | #C0AE57 | 0.154 |
| Deuteranopia (no green cones) | #AEA166 | 0.152 |
| Tritanopia (no blue cones) | #00BCA9 | 0.102 |
| Achromatopsia (no color) | #A6A6A6 | 0.187 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18BF5F
#18BF5F
oklch(70.6% 0.186 150.8)
- #DF6FD5
#DF6FD5
oklch(70.7% 0.185 330.8)
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 #18BF5F, closest first.
No curated palette has a color within ΔE 0.04 of #18BF5F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Algae Green #21C36F ΔE 0.020
- Shamrock Green #02C14D ΔE 0.022
- Cool Green #33B864 ΔE 0.024
- Dark Mint Green #20C073 ΔE 0.024
- Dark Mint #48C072 ΔE 0.034
- Shamrock #01B44C ΔE 0.035
- Leafy Green #51B73B ΔE 0.036
- Green Teal #0CB577 ΔE 0.048
Use #18BF5F 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.