#178F46
Closest named color: Kelley Green (#009337). oklch(57.1% 0.148 150.5), rgb(23, 143, 70).
Aa
Black text reads best on this color (5.05:1).
About this color
#178F46 is a medium-dark, vivid green. In OKLCH its lightness is 57%, its chroma 0.148 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelley Green (#009337), ΔE 0.024 away. Black text reads best on it, at 5.05:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.148) |
| Temperature | in between |
| Nearest name | Kelley Green (#009337) |
| Black text | 5.05:1 |
| White text | 4.15:1 |
Values
| HEX | #178F46 |
| RGB | rgb(23, 143, 70) |
| HSL | hsl(144, 72%, 33%) |
| OKLCH | oklch(57.1% 0.148 150.5) |
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 #178F46 | 4.15:1 | AA large text | Lc -73.6 | Content text, not long reading |
| Black text on #178F46 | 5.05:1 | AA | Lc 36.0 | Non-text elements, placeholder text |
| #178F46 text on white | 4.15:1 | AA large text | Lc 68.1 | Content text, not long reading |
| #178F46 text on black | 5.05:1 | AA | Lc -33.6 | 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 600.
-
Step 50
50
#F1F7F2
oklch(97% 0.009 150.7)
-
Step 100
100
#E1EEE3
oklch(93.6% 0.02 150.1)
-
Step 200
200
#C9E0CD
oklch(88.4% 0.036 150.5)
-
Step 300
300
#A2CDAB
oklch(80.8% 0.066 151)
-
Step 400
400
#6DB37E
oklch(70.6% 0.105 150.7)
-
Step 500
500
#3FA05C
oklch(63.1% 0.136 150.4)
-
Step 600
600 (this color)
#178F46
oklch(57.1% 0.148 150.5)
-
Step 700
700
#007535
oklch(49.2% 0.134 150.5)
-
Step 800
800
#05602B
oklch(42.9% 0.115 150.4)
-
Step 900
900
#144E27
oklch(37.6% 0.088 150.4)
-
Step 950
950
#0E2E17
oklch(27% 0.057 150.2)
#178F46 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) | #908240 | 0.123 |
| Deuteranopia (no green cones) | #83794B | 0.121 |
| Tritanopia (no blue cones) | #008C7E | 0.082 |
| Achromatopsia (no color) | #7C7C7C | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #178F46
#178F46
oklch(57.1% 0.148 150.5)
- #A753A0
#A753A0
oklch(57.2% 0.147 330.5)
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 #178F46, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelley Green #009337 ΔE 0.024
- Sea Green #2E8B57 ΔE 0.031
- Forest Green #228B22 ΔE 0.032
- Irish Green #019529 ΔE 0.038
- Emerald Green #028F1E ΔE 0.039
- Fern Green #548D44 ΔE 0.041
- Jungle Green #048243 ΔE 0.041
- Viridian #1E9167 ΔE 0.044
Use #178F46 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.