#15B149
Closest named color: Shamrock (#01B44C). oklch(66.5% 0.188 147.9), rgb(21, 177, 73).
Aa
Black text reads best on this color (7.41:1).
About this color
#15B149 is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.188 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.008 away. Black text reads best on it, at 7.41:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.188) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.41:1 |
| White text | 2.83:1 |
Values
| HEX | #15B149 |
| RGB | rgb(21, 177, 73) |
| HSL | hsl(140, 79%, 39%) |
| OKLCH | oklch(66.5% 0.188 147.9) |
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 #15B149 | 2.83:1 | Fails | Lc -59.0 | Large or bold text, headings |
| Black text on #15B149 | 7.41:1 | AAA | Lc 50.3 | Large or bold text, headings |
| #15B149 text on white | 2.83:1 | Fails | Lc 53.7 | Large or bold text, headings |
| #15B149 text on black | 7.41:1 | AAA | Lc -48.1 | 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
#DFEFE0
oklch(93.6% 0.026 147.1)
-
Step 200
200
#C3E3C6
oklch(88.5% 0.052 147.7)
-
Step 300
300
#98D19F
oklch(80.8% 0.091 147.9)
-
Step 400
400
#57B96A
oklch(70.7% 0.147 148)
-
Step 500
500 (this color)
#15B149
oklch(66.5% 0.188 147.9)
-
Step 600
600
#008B35
oklch(55.5% 0.161 147.8)
-
Step 700
700
#00752C
oklch(49% 0.142 148)
-
Step 800
800
#006022
oklch(42.6% 0.124 147.8)
-
Step 900
900
#00501B
oklch(37.6% 0.109 147.8)
-
Step 950
950
#01300E
oklch(27% 0.077 148)
#15B149 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) | #B3A03E | 0.148 |
| Deuteranopia (no green cones) | #A39552 | 0.147 |
| Tritanopia (no blue cones) | #00AD9A | 0.110 |
| Achromatopsia (no color) | #9A9A9A | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15B149
#15B149
oklch(66.5% 0.188 147.9)
- #CE62CD
#CE62CD
oklch(66.4% 0.188 327.8)
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 #15B149, closest first.
No curated palette has a color within ΔE 0.04 of #15B149.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.008
- Medium Green #39AD48 ΔE 0.016
- Kelly Green #02AB2E ΔE 0.027
- Cool Green #33B864 ΔE 0.037
- Mid Green #50A747 ΔE 0.037
- Leafy Green #51B73B ΔE 0.038
- Grass #5CAC2D ΔE 0.038
- Dark Pastel Green #56AE57 ΔE 0.041
Use #15B149 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.