#317B4E
Closest named color: Jungle Green (#048243). oklch(52.4% 0.103 154), rgb(49, 123, 78).
Aa
White text reads best on this color (5.15:1).
About this color
#317B4E is a medium-dark, moderately saturated green. In OKLCH its lightness is 52%, its chroma 0.103 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Jungle Green (#048243), ΔE 0.035 away. White text reads best on it, at 5.15:1.
| Hue family | Greens |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.103) |
| Temperature | in between |
| Nearest name | Jungle Green (#048243) |
| Black text | 4.07:1 |
| White text | 5.15:1 |
Values
| HEX | #317B4E |
| RGB | rgb(49, 123, 78) |
| HSL | hsl(144, 43%, 34%) |
| OKLCH | oklch(52.4% 0.103 154) |
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 #317B4E | 5.15:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #317B4E | 4.07:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #317B4E text on white | 5.15:1 | AA | Lc 75.3 | Fine for body text |
| #317B4E text on black | 4.07:1 | AA large text | Lc -26.5 | Dividers and decoration only |
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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E3EDE6
oklch(93.7% 0.014 155.6)
-
Step 200
200
#CDDED2
oklch(88.4% 0.024 155.1)
-
Step 300
300
#AACAB3
oklch(80.9% 0.047 154)
-
Step 400
400
#7CAF8C
oklch(70.8% 0.074 154.2)
-
Step 500
500
#589A6F
oklch(63% 0.094 154.2)
-
Step 600
600 (this color)
#317B4E
oklch(52.4% 0.103 154)
-
Step 700
700
#2D7047
oklch(49% 0.095 153.9)
-
Step 800
800
#275B3B
oklch(42.6% 0.078 154.3)
-
Step 900
900
#254B32
oklch(37.7% 0.061 153.5)
-
Step 950
950
#162C1E
oklch(27% 0.039 154.9)
#317B4E 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) | #7B724B | 0.090 |
| Deuteranopia (no green cones) | #716A51 | 0.090 |
| Tritanopia (no blue cones) | #197A6F | 0.050 |
| Achromatopsia (no color) | #6D6D6D | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #317B4E
#317B4E
oklch(52.4% 0.103 154)
- #8D5282
#8D5282
oklch(52.3% 0.102 334.1)
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 #317B4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jungle Green #048243 ΔE 0.035
- Sea Green #2E8B57 ΔE 0.047
- Dark Sage #598556 ΔE 0.054
- Dark Olive Green #556B2F ΔE 0.056
- Military Green #667C3E ΔE 0.058
- Muddy Green #657432 ΔE 0.058
- Dark Moss Green #606C38 ΔE 0.060
- Tree Green #2A7E19 ΔE 0.061
Use #317B4E 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.