#31AF55
Closest named color: Medium Green (#39AD48). oklch(66.6% 0.169 148.6), rgb(49, 175, 85).
Aa
Black text reads best on this color (7.39:1).
About this color
#31AF55 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.169 and its hue 149°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.013 away. Black text reads best on it, at 7.39:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.169) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 7.39:1 |
| White text | 2.84:1 |
Values
| HEX | #31AF55 |
| RGB | rgb(49, 175, 85) |
| HSL | hsl(137, 56%, 44%) |
| OKLCH | oklch(66.6% 0.169 148.6) |
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 #31AF55 | 2.84:1 | Fails | Lc -59.3 | Large or bold text, headings |
| Black text on #31AF55 | 7.39:1 | AAA | Lc 50.0 | Large or bold text, headings |
| #31AF55 text on white | 2.84:1 | Fails | Lc 54.0 | Large or bold text, headings |
| #31AF55 text on black | 7.39:1 | AAA | Lc -47.8 | 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
#F1F8F1
oklch(97.2% 0.012 145.5)
-
Step 100
100
#E0EFE1
oklch(93.7% 0.024 147.3)
-
Step 200
200
#C5E2C9
oklch(88.5% 0.046 149.2)
-
Step 300
300
#9CD0A3
oklch(80.9% 0.083 148.4)
-
Step 400
400
#60B771
oklch(70.7% 0.132 148.5)
-
Step 500
500 (this color)
#31AF55
oklch(66.6% 0.169 148.6)
-
Step 600
600
#008B39
oklch(55.6% 0.158 148.7)
-
Step 700
700
#00752F
oklch(49.1% 0.139 148.8)
-
Step 800
800
#006025
oklch(42.7% 0.121 148.7)
-
Step 900
900
#00501E
oklch(37.6% 0.107 148.8)
-
Step 950
950
#062F12
oklch(26.9% 0.069 148.9)
#31AF55 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) | #B1A04D | 0.136 |
| Deuteranopia (no green cones) | #A2955C | 0.135 |
| Tritanopia (no blue cones) | #00AC9A | 0.095 |
| Achromatopsia (no color) | #999999 | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31AF55
#31AF55
oklch(66.6% 0.169 148.6)
- #CA69C7
#CA69C7
oklch(66.6% 0.169 328.4)
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 #31AF55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.013
- Shamrock #01B44C ΔE 0.023
- Dark Pastel Green #56AE57 ΔE 0.025
- Jade Green #2BAF6A ΔE 0.025
- Mid Green #50A747 ΔE 0.026
- Cool Green #33B864 ΔE 0.028
- Seaweed Green #35AD6B ΔE 0.030
- Medium Sea Green #3CB371 ΔE 0.035
Use #31AF55 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.