#17B657
Closest named color: Shamrock (#01B44C). oklch(68.1% 0.182 150.1), rgb(23, 182, 87).
Aa
Black text reads best on this color (7.86:1).
About this color
#17B657 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.182 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.013 away. Black text reads best on it, at 7.86:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.182) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.86:1 |
| White text | 2.66:1 |
Values
| HEX | #17B657 |
| RGB | rgb(23, 182, 87) |
| HSL | hsl(144, 78%, 40%) |
| OKLCH | oklch(68.1% 0.182 150.1) |
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 #17B657 | 2.66:1 | Fails | Lc -56.5 | Large or bold text, headings |
| Black text on #17B657 | 7.86:1 | AAA | Lc 52.7 | Large or bold text, headings |
| #17B657 text on white | 2.66:1 | Fails | Lc 51.3 | Large or bold text, headings |
| #17B657 text on black | 7.86:1 | AAA | Lc -50.6 | 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 400.
-
Step 50
50
#EFF9F0
oklch(97.2% 0.016 148.4)
-
Step 100
100
#DBF0DF
oklch(93.5% 0.032 151.2)
-
Step 200
200
#BCE6C4
oklch(88.6% 0.064 150.6)
-
Step 300
300
#89D59A
oklch(80.8% 0.113 150.4)
-
Step 400
400 (this color)
#17B657
oklch(68.1% 0.182 150.1)
-
Step 500
500
#00A54C
oklch(63.1% 0.173 150.1)
-
Step 600
600
#008B3F
oklch(55.7% 0.153 150.2)
-
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)
#17B657 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) | #B7A54F | 0.149 |
| Deuteranopia (no green cones) | #A79A5E | 0.147 |
| Tritanopia (no blue cones) | #00B3A0 | 0.101 |
| Achromatopsia (no color) | #9E9E9E | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17B657
#17B657
oklch(68.1% 0.182 150.1)
- #D468CD
#D468CD
oklch(68% 0.182 329.8)
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 #17B657, closest first.
No curated palette has a color within ΔE 0.04 of #17B657.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.013
- Cool Green #33B864 ΔE 0.020
- Medium Green #39AD48 ΔE 0.026
- Leafy Green #51B73B ΔE 0.034
- Jade Green #2BAF6A ΔE 0.036
- Shamrock Green #02C14D ΔE 0.036
- Dark Pastel Green #56AE57 ΔE 0.037
- Dark Mint Green #20C073 ΔE 0.039
Use #17B657 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.