#17A559
Closest named color: Seaweed Green (#35AD6B). oklch(63.5% 0.159 152.7), rgb(23, 165, 89).
Aa
Black text reads best on this color (6.56:1).
About this color
#17A559 is a medium-light, vivid green. In OKLCH its lightness is 64%, its chroma 0.159 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed Green (#35AD6B), ΔE 0.034 away. Black text reads best on it, at 6.56:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Seaweed Green (#35AD6B) |
| Black text | 6.56:1 |
| White text | 3.19:1 |
Values
| HEX | #17A559 |
| RGB | rgb(23, 165, 89) |
| HSL | hsl(148, 76%, 37%) |
| OKLCH | oklch(63.5% 0.159 152.7) |
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 #17A559 | 3.19:1 | AA large text | Lc -64.0 | Content text, not long reading |
| Black text on #17A559 | 6.56:1 | AA | Lc 45.4 | Large or bold text, headings |
| #17A559 text on white | 3.19:1 | AA large text | Lc 58.6 | Large or bold text, headings |
| #17A559 text on black | 6.56:1 | AA | Lc -43.1 | Non-text elements, placeholder text |
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
#F1F8F2
oklch(97.2% 0.011 149.9)
-
Step 100
100
#DFEEE3
oklch(93.5% 0.022 154.1)
-
Step 200
200
#C5E2CC
oklch(88.5% 0.043 152.7)
-
Step 300
300
#9BD0A9
oklch(81% 0.078 152.6)
-
Step 400
400
#5DB77A
oklch(70.8% 0.125 152.5)
-
Step 500
500 (this color)
#17A559
oklch(63.5% 0.159 152.7)
-
Step 600
600
#008A47
oklch(55.5% 0.144 152.6)
-
Step 700
700
#00743B
oklch(49% 0.127 152.7)
-
Step 800
800
#005F2F
oklch(42.5% 0.11 152.7)
-
Step 900
900
#005027
oklch(37.8% 0.098 152.9)
-
Step 950
950
#042F16
oklch(26.9% 0.065 152.8)
#17A559 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) | #A59653 | 0.136 |
| Deuteranopia (no green cones) | #968B5E | 0.135 |
| Tritanopia (no blue cones) | #00A393 | 0.083 |
| Achromatopsia (no color) | #909090 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17A559
#17A559
oklch(63.5% 0.159 152.7)
- #C161B4
#C161B4
oklch(63.5% 0.16 332.6)
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 #17A559, closest first.
No curated palette has a color within ΔE 0.04 of #17A559.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed Green #35AD6B ΔE 0.034
- Jade Green #2BAF6A ΔE 0.035
- Mid Green #50A747 ΔE 0.035
- Jade #1FA774 ΔE 0.035
- Medium Green #39AD48 ΔE 0.037
- Muted Green #5FA052 ΔE 0.043
- Algae #54AC68 ΔE 0.047
- Dark Pastel Green #56AE57 ΔE 0.048
Use #17A559 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.