#1BBB48
Closest named color: Shamrock Green (#02C14D). oklch(69.2% 0.199 146.8), rgb(27, 187, 72).
Aa
Black text reads best on this color (8.24:1).
About this color
#1BBB48 is a medium-light, vivid green. In OKLCH its lightness is 69%, its chroma 0.199 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock Green (#02C14D), ΔE 0.016 away. Black text reads best on it, at 8.24:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.199) |
| Temperature | in between |
| Nearest name | Shamrock Green (#02C14D) |
| Black text | 8.24:1 |
| White text | 2.54:1 |
Values
| HEX | #1BBB48 |
| RGB | rgb(27, 187, 72) |
| HSL | hsl(137, 75%, 42%) |
| OKLCH | oklch(69.2% 0.199 146.8) |
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 #1BBB48 | 2.54:1 | Fails | Lc -54.3 | Large or bold text, headings |
| Black text on #1BBB48 | 8.24:1 | AAA | Lc 54.8 | Large or bold text, headings |
| #1BBB48 text on white | 2.54:1 | Fails | Lc 49.2 | Large or bold text, headings |
| #1BBB48 text on black | 8.24:1 | AAA | Lc -52.7 | 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
#EFF9EF
oklch(97.2% 0.017 145.4)
-
Step 100
100
#DBF1DC
oklch(93.6% 0.036 146.5)
-
Step 200
200
#BCE6BF
oklch(88.5% 0.069 146.9)
-
Step 300
300
#88D691
oklch(80.8% 0.124 147.1)
-
Step 400
400 (this color)
#1BBB48
oklch(69.2% 0.199 146.8)
-
Step 500
500
#00A63B
oklch(63.2% 0.188 146.9)
-
Step 600
600
#008B30
oklch(55.5% 0.165 146.9)
-
Step 700
700
#007527
oklch(49% 0.146 146.9)
-
Step 800
800
#00601F
oklch(42.6% 0.127 147)
-
Step 900
900
#005018
oklch(37.6% 0.112 146.9)
-
Step 950
950
#00300B
oklch(26.9% 0.08 146.8)
#1BBB48 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) | #BDA93B | 0.154 |
| Deuteranopia (no green cones) | #AD9E52 | 0.153 |
| Tritanopia (no blue cones) | #00B7A2 | 0.118 |
| Achromatopsia (no color) | #A2A2A2 | 0.200 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BBB48
#1BBB48
oklch(69.2% 0.199 146.8)
- #D967DB
#D967DB
oklch(69.1% 0.199 326.8)
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 #1BBB48, closest first.
No curated palette has a color within ΔE 0.04 of #1BBB48.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock Green #02C14D ΔE 0.016
- Shamrock #01B44C ΔE 0.023
- Leafy Green #51B73B ΔE 0.025
- Cool Green #33B864 ΔE 0.036
- Frog Green #58BC08 ΔE 0.040
- Medium Green #39AD48 ΔE 0.041
- Algae Green #21C36F ΔE 0.043
- Dark Mint Green #20C073 ΔE 0.047
Use #1BBB48 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.