#12C158
Closest named color: Shamrock Green (#02C14D). oklch(71% 0.195 149.4), rgb(18, 193, 88).
Aa
Black text reads best on this color (8.79:1).
About this color
#12C158 is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.195 and its hue 149°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock Green (#02C14D), ΔE 0.012 away. Black text reads best on it, at 8.79:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.195) |
| Temperature | in between |
| Nearest name | Shamrock Green (#02C14D) |
| Black text | 8.79:1 |
| White text | 2.38:1 |
Values
| HEX | #12C158 |
| RGB | rgb(18, 193, 88) |
| HSL | hsl(144, 83%, 41%) |
| OKLCH | oklch(71% 0.195 149.4) |
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 #12C158 | 2.38:1 | Fails | Lc -51.3 | Large or bold text, headings |
| Black text on #12C158 | 8.79:1 | AAA | Lc 57.6 | Large or bold text, headings |
| #12C158 text on white | 2.38:1 | Fails | Lc 46.4 | Large or bold text, headings |
| #12C158 text on black | 8.79:1 | AAA | Lc -55.7 | 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
#DAF1DD
oklch(93.6% 0.036 149.1)
-
Step 200
200
#BBE6C1
oklch(88.5% 0.067 148.9)
-
Step 300
300
#85D796
oklch(81% 0.122 149.6)
-
Step 400
400 (this color)
#12C158
oklch(71% 0.195 149.4)
-
Step 500
500
#00A549
oklch(63.1% 0.176 149.5)
-
Step 600
600
#008B3C
oklch(55.6% 0.155 149.4)
-
Step 700
700
#007531
oklch(49.1% 0.138 149.3)
-
Step 800
800
#006027
oklch(42.7% 0.12 149.3)
-
Step 900
900
#00501F
oklch(37.7% 0.106 149.2)
-
Step 950
950
#003010
oklch(27% 0.075 149.4)
#12C158 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) | #C2AF4E | 0.157 |
| Deuteranopia (no green cones) | #B1A360 | 0.156 |
| Tritanopia (no blue cones) | #00BDA9 | 0.110 |
| Achromatopsia (no color) | #A8A8A8 | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12C158
#12C158
oklch(71% 0.195 149.4)
- #E16DDB
#E16DDB
oklch(70.9% 0.195 329.4)
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 #12C158, closest first.
No curated palette has a color within ΔE 0.04 of #12C158.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock Green #02C14D ΔE 0.012
- Algae Green #21C36F ΔE 0.027
- Dark Mint Green #20C073 ΔE 0.033
- Cool Green #33B864 ΔE 0.034
- Leafy Green #51B73B ΔE 0.035
- Shamrock #01B44C ΔE 0.038
- Dark Mint #48C072 ΔE 0.041
- Frog Green #58BC08 ΔE 0.048
Use #12C158 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.