#31B141
Closest named color: Shamrock (#01B44C). oklch(66.9% 0.188 144.9), rgb(49, 177, 65).
Aa
Black text reads best on this color (7.49:1).
About this color
#31B141 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.188 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.013 away. Black text reads best on it, at 7.49:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.188) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.49:1 |
| White text | 2.80:1 |
Values
| HEX | #31B141 |
| RGB | rgb(49, 177, 65) |
| HSL | hsl(128, 57%, 44%) |
| OKLCH | oklch(66.9% 0.188 144.9) |
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 #31B141 | 2.80:1 | Fails | Lc -58.7 | Large or bold text, headings |
| Black text on #31B141 | 7.49:1 | AAA | Lc 50.6 | Large or bold text, headings |
| #31B141 text on white | 2.80:1 | Fails | Lc 53.4 | Large or bold text, headings |
| #31B141 text on black | 7.49:1 | AAA | Lc -48.4 | 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
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#DFEFDF
oklch(93.6% 0.027 145.4)
-
Step 200
200
#C5E3C5
oklch(88.6% 0.052 145.1)
-
Step 300
300
#9BD19C
oklch(80.9% 0.093 145.1)
-
Step 400
400
#5FB864
oklch(70.7% 0.147 144.9)
-
Step 500
500 (this color)
#31B141
oklch(66.9% 0.188 144.9)
-
Step 600
600
#008C23
oklch(55.6% 0.175 144.9)
-
Step 700
700
#00761C
oklch(49.2% 0.155 144.9)
-
Step 800
800
#006115
oklch(42.8% 0.135 144.8)
-
Step 900
900
#005110
oklch(37.8% 0.119 144.9)
-
Step 950
950
#05300A
oklch(27.1% 0.079 144.8)
#31B141 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) | #B4A134 | 0.140 |
| Deuteranopia (no green cones) | #A5964B | 0.140 |
| Tritanopia (no blue cones) | #00AC99 | 0.116 |
| Achromatopsia (no color) | #9A9A9A | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31B141
#31B141
oklch(66.9% 0.188 144.9)
- #CC65D3
#CC65D3
oklch(66.9% 0.188 325)
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 #31B141, closest first.
No curated palette has a color within ΔE 0.04 of #31B141.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.013
- Medium Green #39AD48 ΔE 0.015
- Kelly Green #02AB2E ΔE 0.028
- Grass #5CAC2D ΔE 0.029
- Leafy Green #51B73B ΔE 0.029
- Mid Green #50A747 ΔE 0.035
- Leaf Green #5CA904 ΔE 0.036
- Cool Green #33B864 ΔE 0.038
Use #31B141 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.