#31B149
Closest named color: Medium Green (#39AD48). oklch(66.9% 0.181 146.1), rgb(49, 177, 73).
Aa
Black text reads best on this color (7.51:1).
About this color
#31B149 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.181 and its hue 146°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.011 away. Black text reads best on it, at 7.51:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.181) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 7.51:1 |
| White text | 2.79:1 |
Values
| HEX | #31B149 |
| RGB | rgb(49, 177, 73) |
| HSL | hsl(131, 57%, 44%) |
| OKLCH | oklch(66.9% 0.181 146.1) |
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 #31B149 | 2.79:1 | Fails | Lc -58.6 | Large or bold text, headings |
| Black text on #31B149 | 7.51:1 | AAA | Lc 50.7 | Large or bold text, headings |
| #31B149 text on white | 2.79:1 | Fails | Lc 53.3 | Large or bold text, headings |
| #31B149 text on black | 7.51:1 | AAA | Lc -48.5 | 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
#EFF8F0
oklch(97% 0.014 148.8)
-
Step 100
100
#DDF0DD
oklch(93.6% 0.032 145.3)
-
Step 200
200
#BFE5C1
oklch(88.5% 0.063 146.4)
-
Step 300
300
#8FD594
oklch(81% 0.115 146.1)
-
Step 400
400 (this color)
#31B149
oklch(66.9% 0.181 146.1)
-
Step 500
500
#00A636
oklch(63.1% 0.192 146.2)
-
Step 600
600
#008C2C
oklch(55.7% 0.169 146.1)
-
Step 700
700
#007624
oklch(49.2% 0.15 146.2)
-
Step 800
800
#00601C
oklch(42.6% 0.129 146.3)
-
Step 900
900
#005116
oklch(37.9% 0.115 146.2)
-
Step 950
950
#003009
oklch(26.9% 0.082 146)
#31B149 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) | #B4A13E | 0.140 |
| Deuteranopia (no green cones) | #A59751 | 0.138 |
| Tritanopia (no blue cones) | #00AD9A | 0.108 |
| Achromatopsia (no color) | #9B9B9B | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31B149
#31B149
oklch(66.9% 0.181 146.1)
- #CC67CF
#CC67CF
oklch(66.9% 0.181 326.3)
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 #31B149, closest first.
No curated palette has a color within ΔE 0.04 of #31B149.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.011
- Shamrock #01B44C ΔE 0.013
- Grass #5CAC2D ΔE 0.031
- Leafy Green #51B73B ΔE 0.031
- Cool Green #33B864 ΔE 0.032
- Mid Green #50A747 ΔE 0.032
- Kelly Green #02AB2E ΔE 0.033
- Dark Pastel Green #56AE57 ΔE 0.033
Use #31B149 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.