#31B649
Closest named color: Shamrock (#01B44C). oklch(68.3% 0.188 145.9), rgb(49, 182, 73).
Aa
Black text reads best on this color (7.91:1).
About this color
#31B649 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.188 and its hue 146°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.015 away. Black text reads best on it, at 7.91:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.188) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.91:1 |
| White text | 2.65:1 |
Values
| HEX | #31B649 |
| RGB | rgb(49, 182, 73) |
| HSL | hsl(131, 58%, 45%) |
| OKLCH | oklch(68.3% 0.188 145.9) |
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 #31B649 | 2.65:1 | Fails | Lc -56.3 | Large or bold text, headings |
| Black text on #31B649 | 7.91:1 | AAA | Lc 52.9 | Large or bold text, headings |
| #31B649 text on white | 2.65:1 | Fails | Lc 51.1 | Large or bold text, headings |
| #31B649 text on black | 7.91:1 | AAA | Lc -50.8 | 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 400.
-
Step 50
50
#EFF8EF
oklch(97% 0.015 145.5)
-
Step 100
100
#DCF0DD
oklch(93.5% 0.033 146.7)
-
Step 200
200
#BEE5C0
oklch(88.4% 0.065 146.4)
-
Step 300
300
#8ED592
oklch(80.9% 0.117 145.7)
-
Step 400
400 (this color)
#31B649
oklch(68.3% 0.188 145.9)
-
Step 500
500
#00A634
oklch(63.1% 0.193 145.9)
-
Step 600
600
#008C2A
oklch(55.7% 0.171 145.8)
-
Step 700
700
#007622
oklch(49.2% 0.151 145.8)
-
Step 800
800
#00601B
oklch(42.6% 0.13 146.1)
-
Step 900
900
#005115
oklch(37.8% 0.116 146)
-
Step 950
950
#003009
oklch(26.9% 0.082 146)
#31B649 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) | #B9A53E | 0.144 |
| Deuteranopia (no green cones) | #A99B52 | 0.141 |
| Tritanopia (no blue cones) | #00B29E | 0.112 |
| Achromatopsia (no color) | #9F9F9F | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31B649
#31B649
oklch(68.3% 0.188 145.9)
- #D269D6
#D269D6
oklch(68.3% 0.188 326)
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 #31B649, closest first.
No curated palette has a color within ΔE 0.04 of #31B649.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.015
- Leafy Green #51B73B ΔE 0.021
- Medium Green #39AD48 ΔE 0.026
- Cool Green #33B864 ΔE 0.029
- Shamrock Green #02C14D ΔE 0.031
- Grass #5CAC2D ΔE 0.035
- Dark Pastel Green #56AE57 ΔE 0.039
- Kelly Green #02AB2E ΔE 0.041
Use #31B649 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.