#17B355
Closest named color: Shamrock (#01B44C). oklch(67.2% 0.18 149.9), rgb(23, 179, 85).
Aa
Black text reads best on this color (7.61:1).
About this color
#17B355 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.180 and its hue 150°. 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 7.61:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.180) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.61:1 |
| White text | 2.75:1 |
Values
| HEX | #17B355 |
| RGB | rgb(23, 179, 85) |
| HSL | hsl(144, 77%, 40%) |
| OKLCH | oklch(67.2% 0.18 149.9) |
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 #17B355 | 2.75:1 | Fails | Lc -57.9 | Large or bold text, headings |
| Black text on #17B355 | 7.61:1 | AAA | Lc 51.4 | Large or bold text, headings |
| #17B355 text on white | 2.75:1 | Fails | Lc 52.6 | Large or bold text, headings |
| #17B355 text on black | 7.61:1 | AAA | Lc -49.2 | 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
#EFF8F0
oklch(97% 0.014 148.8)
-
Step 100
100
#DBF0DF
oklch(93.5% 0.032 151.2)
-
Step 200
200
#BDE5C4
oklch(88.4% 0.061 150.1)
-
Step 300
300
#8AD59A
oklch(80.8% 0.112 150.1)
-
Step 400
400 (this color)
#17B355
oklch(67.2% 0.18 149.9)
-
Step 500
500
#00A54B
oklch(63.1% 0.174 149.9)
-
Step 600
600
#008B3E
oklch(55.6% 0.154 149.9)
-
Step 700
700
#007533
oklch(49.1% 0.136 149.9)
-
Step 800
800
#006029
oklch(42.7% 0.118 150)
-
Step 900
900
#005021
oklch(37.7% 0.104 150)
-
Step 950
950
#003011
oklch(27% 0.074 150)
#17B355 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) | #B4A34D | 0.147 |
| Deuteranopia (no green cones) | #A4975C | 0.146 |
| Tritanopia (no blue cones) | #00B09D | 0.099 |
| Achromatopsia (no color) | #9C9C9C | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17B355
#17B355
oklch(67.2% 0.18 149.9)
- #D167CA
#D167CA
oklch(67.3% 0.179 329.9)
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 #17B355, closest first.
No curated palette has a color within ΔE 0.04 of #17B355.
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 0.019
- Cool Green #33B864 ΔE 0.025
- Jade Green #2BAF6A ΔE 0.032
- Dark Pastel Green #56AE57 ΔE 0.035
- Mid Green #50A747 ΔE 0.038
- Leafy Green #51B73B ΔE 0.038
- Seaweed Green #35AD6B ΔE 0.039
Use #17B355 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.