#0CB540
Closest named color: Shamrock (#01B44C). oklch(67.4% 0.2 146.5), rgb(12, 181, 64).
Aa
Black text reads best on this color (7.69:1).
About this color
#0CB540 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.200 and its hue 146°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.012 away. Black text reads best on it, at 7.69:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.200) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.69:1 |
| White text | 2.72:1 |
Values
| HEX | #0CB540 |
| RGB | rgb(12, 181, 64) |
| HSL | hsl(138, 88%, 38%) |
| OKLCH | oklch(67.4% 0.2 146.5) |
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 #0CB540 | 2.72:1 | Fails | Lc -57.3 | Large or bold text, headings |
| Black text on #0CB540 | 7.69:1 | AAA | Lc 51.9 | Large or bold text, headings |
| #0CB540 text on white | 2.72:1 | Fails | Lc 52.1 | Large or bold text, headings |
| #0CB540 text on black | 7.69:1 | AAA | Lc -49.8 | 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
#EFF9EF
oklch(97.2% 0.017 145.4)
-
Step 100
100
#DBF1DC
oklch(93.6% 0.036 146.5)
-
Step 200
200
#BCE6BE
oklch(88.4% 0.07 146.2)
-
Step 300
300
#89D690
oklch(80.8% 0.124 146.5)
-
Step 400
400 (this color)
#0CB540
oklch(67.4% 0.2 146.5)
-
Step 500
500
#00A638
oklch(63.1% 0.19 146.5)
-
Step 600
600
#008C2E
oklch(55.7% 0.168 146.5)
-
Step 700
700
#007525
oklch(49% 0.148 146.5)
-
Step 800
800
#00601D
oklch(42.6% 0.128 146.5)
-
Step 900
900
#005017
oklch(37.6% 0.113 146.6)
-
Step 950
950
#00300A
oklch(26.9% 0.081 146.4)
#0CB540 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) | #B8A432 | 0.154 |
| Deuteranopia (no green cones) | #A7984B | 0.153 |
| Tritanopia (no blue cones) | #00B19D | 0.121 |
| Achromatopsia (no color) | #9D9D9D | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0CB540
#0CB540
oklch(67.4% 0.2 146.5)
- #D361D6
#D361D6
oklch(67.4% 0.2 326.5)
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 #0CB540, closest first.
No curated palette has a color within ΔE 0.04 of #0CB540.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.012
- Medium Green #39AD48 ΔE 0.029
- Kelly Green #02AB2E ΔE 0.030
- Leafy Green #51B73B ΔE 0.031
- Shamrock Green #02C14D ΔE 0.034
- Grass #5CAC2D ΔE 0.041
- Cool Green #33B864 ΔE 0.042
- Leaf Green #5CA904 ΔE 0.046
Use #0CB540 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.