#1CB243
Closest named color: Shamrock (#01B44C). oklch(66.8% 0.193 146.5), rgb(28, 178, 67).
Aa
Black text reads best on this color (7.49:1).
About this color
#1CB243 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.193 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.009 away. Black text reads best on it, at 7.49:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.193) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.49:1 |
| White text | 2.80:1 |
Values
| HEX | #1CB243 |
| RGB | rgb(28, 178, 67) |
| HSL | hsl(136, 73%, 40%) |
| OKLCH | oklch(66.8% 0.193 146.5) |
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 #1CB243 | 2.80:1 | Fails | Lc -58.5 | Large or bold text, headings |
| Black text on #1CB243 | 7.49:1 | AAA | Lc 50.8 | Large or bold text, headings |
| #1CB243 text on white | 2.80:1 | Fails | Lc 53.3 | Large or bold text, headings |
| #1CB243 text on black | 7.49:1 | AAA | Lc -48.6 | 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
#DFEFDF
oklch(93.6% 0.027 145.4)
-
Step 200
200
#C4E3C5
oklch(88.5% 0.052 146)
-
Step 300
300
#98D19D
oklch(80.8% 0.093 146.9)
-
Step 400
400
#58B965
oklch(70.7% 0.151 146.5)
-
Step 500
500 (this color)
#1CB243
oklch(66.8% 0.193 146.5)
-
Step 600
600
#008C2E
oklch(55.7% 0.168 146.5)
-
Step 700
700
#007526
oklch(49% 0.147 146.7)
-
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
#01300B
oklch(27% 0.08 146.5)
#1CB243 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) | #B4A137 | 0.147 |
| Deuteranopia (no green cones) | #A5964D | 0.148 |
| Tritanopia (no blue cones) | #00AE9A | 0.115 |
| Achromatopsia (no color) | #9A9A9A | 0.194 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1CB243
#1CB243
oklch(66.8% 0.193 146.5)
- #CF62D2
#CF62D2
oklch(66.8% 0.193 326.4)
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 #1CB243, closest first.
No curated palette has a color within ΔE 0.04 of #1CB243.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.009
- Medium Green #39AD48 ΔE 0.020
- Kelly Green #02AB2E ΔE 0.026
- Leafy Green #51B73B ΔE 0.033
- Grass #5CAC2D ΔE 0.036
- Cool Green #33B864 ΔE 0.039
- Mid Green #50A747 ΔE 0.041
- Shamrock Green #02C14D ΔE 0.042
Use #1CB243 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.