#17B151
Closest named color: Shamrock (#01B44C). oklch(66.6% 0.181 149.3), rgb(23, 177, 81).
Aa
Black text reads best on this color (7.44:1).
About this color
#17B151 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.181 and its hue 149°. 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 7.44:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.181) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.44:1 |
| White text | 2.82:1 |
Values
| HEX | #17B151 |
| RGB | rgb(23, 177, 81) |
| HSL | hsl(143, 77%, 39%) |
| OKLCH | oklch(66.6% 0.181 149.3) |
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 #17B151 | 2.82:1 | Fails | Lc -58.8 | Large or bold text, headings |
| Black text on #17B151 | 7.44:1 | AAA | Lc 50.5 | Large or bold text, headings |
| #17B151 text on white | 2.82:1 | Fails | Lc 53.6 | Large or bold text, headings |
| #17B151 text on black | 7.44:1 | AAA | Lc -48.3 | 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
#DFEFE1
oklch(93.6% 0.025 149.1)
-
Step 200
200
#C3E3C8
oklch(88.5% 0.05 149.7)
-
Step 300
300
#98D1A2
oklch(80.9% 0.088 149.5)
-
Step 400
400
#57B96E
oklch(70.8% 0.143 149.2)
-
Step 500
500 (this color)
#17B151
oklch(66.6% 0.181 149.3)
-
Step 600
600
#008B3C
oklch(55.6% 0.155 149.4)
-
Step 700
700
#007531
oklch(49.1% 0.138 149.3)
-
Step 800
800
#006027
oklch(42.7% 0.12 149.3)
-
Step 900
900
#00501F
oklch(37.7% 0.106 149.2)
-
Step 950
950
#013010
oklch(27% 0.075 149.1)
#17B151 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) | #B2A148 | 0.145 |
| Deuteranopia (no green cones) | #A29558 | 0.145 |
| Tritanopia (no blue cones) | #00AE9B | 0.102 |
| Achromatopsia (no color) | #9A9A9A | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17B151
#17B151
oklch(66.6% 0.181 149.3)
- #CE65C9
#CE65C9
oklch(66.6% 0.18 329.2)
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 #17B151, closest first.
No curated palette has a color within ΔE 0.04 of #17B151.
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 0.015
- Cool Green #33B864 ΔE 0.031
- Kelly Green #02AB2E ΔE 0.034
- Jade Green #2BAF6A ΔE 0.034
- Mid Green #50A747 ΔE 0.035
- Dark Pastel Green #56AE57 ΔE 0.036
- Seaweed Green #35AD6B ΔE 0.040
Use #17B151 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.