#18BC5A
Closest named color: Cool Green (#33B864). oklch(69.7% 0.186 150), rgb(24, 188, 90).
Aa
Black text reads best on this color (8.37:1).
About this color
#18BC5A is a medium-light, vivid green. In OKLCH its lightness is 70%, its chroma 0.186 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Cool Green (#33B864), ΔE 0.021 away. Black text reads best on it, at 8.37:1.
| Hue family | Greens |
| Lightness | medium-light (70%) |
| Chroma | vivid (0.186) |
| Temperature | in between |
| Nearest name | Cool Green (#33B864) |
| Black text | 8.37:1 |
| White text | 2.50:1 |
Values
| HEX | #18BC5A |
| RGB | rgb(24, 188, 90) |
| HSL | hsl(144, 77%, 42%) |
| OKLCH | oklch(69.7% 0.186 150) |
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 #18BC5A | 2.50:1 | Fails | Lc -53.6 | Large or bold text, headings |
| Black text on #18BC5A | 8.37:1 | AAA | Lc 55.4 | Large or bold text, headings |
| #18BC5A text on white | 2.50:1 | Fails | Lc 48.6 | Large or bold text, headings |
| #18BC5A text on black | 8.37:1 | AAA | Lc -53.4 | 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
#EFF9F0
oklch(97.2% 0.016 148.4)
-
Step 100
100
#DBF1DE
oklch(93.7% 0.034 149.3)
-
Step 200
200
#BCE6C3
oklch(88.6% 0.065 149.8)
-
Step 300
300
#87D698
oklch(80.9% 0.117 150)
-
Step 400
400 (this color)
#18BC5A
oklch(69.7% 0.186 150)
-
Step 500
500
#00A54C
oklch(63.1% 0.173 150.1)
-
Step 600
600
#008B3E
oklch(55.6% 0.154 149.9)
-
Step 700
700
#007533
oklch(49.1% 0.136 149.9)
-
Step 800
800
#006029
oklch(42.7% 0.118 150)
-
Step 900
900
#005021
oklch(37.7% 0.104 150)
-
Step 950
950
#003011
oklch(27% 0.074 150)
#18BC5A 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) | #BDAB52 | 0.153 |
| Deuteranopia (no green cones) | #AC9F61 | 0.150 |
| Tritanopia (no blue cones) | #00B9A6 | 0.104 |
| Achromatopsia (no color) | #A4A4A4 | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18BC5A
#18BC5A
oklch(69.7% 0.186 150)
- #DB6CD3
#DB6CD3
oklch(69.7% 0.186 330.1)
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 #18BC5A, closest first.
No curated palette has a color within ΔE 0.04 of #18BC5A.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Green #33B864 ΔE 0.021
- Shamrock Green #02C14D ΔE 0.023
- Shamrock #01B44C ΔE 0.026
- Algae Green #21C36F ΔE 0.028
- Dark Mint Green #20C073 ΔE 0.030
- Leafy Green #51B73B ΔE 0.032
- Dark Mint #48C072 ΔE 0.039
- Medium Green #39AD48 ΔE 0.041
Use #18BC5A 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.