#31B441
Closest named color: Shamrock (#01B44C). oklch(67.7% 0.191 144.8), rgb(49, 180, 65).
Aa
Black text reads best on this color (7.73:1).
About this color
#31B441 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.191 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.014 away. Black text reads best on it, at 7.73:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.191) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.73:1 |
| White text | 2.71:1 |
Values
| HEX | #31B441 |
| RGB | rgb(49, 180, 65) |
| HSL | hsl(127, 57%, 45%) |
| OKLCH | oklch(67.7% 0.191 144.8) |
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 #31B441 | 2.71:1 | Fails | Lc -57.3 | Large or bold text, headings |
| Black text on #31B441 | 7.73:1 | AAA | Lc 51.9 | Large or bold text, headings |
| #31B441 text on white | 2.71:1 | Fails | Lc 52.1 | Large or bold text, headings |
| #31B441 text on black | 7.73:1 | AAA | Lc -49.8 | 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
#DCF0DC
oklch(93.5% 0.034 145.3)
-
Step 200
200
#BFE5BE
oklch(88.4% 0.066 144.3)
-
Step 300
300
#8ED590
oklch(80.8% 0.119 145)
-
Step 400
400 (this color)
#31B441
oklch(67.7% 0.191 144.8)
-
Step 500
500
#00A62A
oklch(63% 0.2 144.8)
-
Step 600
600
#008C22
oklch(55.6% 0.176 144.8)
-
Step 700
700
#00761B
oklch(49.2% 0.156 144.8)
-
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
#003006
oklch(26.9% 0.085 144.8)
#31B441 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) | #B7A333 | 0.142 |
| Deuteranopia (no green cones) | #A8994B | 0.142 |
| Tritanopia (no blue cones) | #00AF9C | 0.119 |
| Achromatopsia (no color) | #9D9D9D | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31B441
#31B441
oklch(67.7% 0.191 144.8)
- #CF66D7
#CF66D7
oklch(67.6% 0.191 324.7)
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 #31B441, closest first.
No curated palette has a color within ΔE 0.04 of #31B441.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.014
- Leafy Green #51B73B ΔE 0.023
- Medium Green #39AD48 ΔE 0.023
- Grass #5CAC2D ΔE 0.031
- Kelly Green #02AB2E ΔE 0.034
- Shamrock Green #02C14D ΔE 0.035
- Cool Green #33B864 ΔE 0.036
- Leaf Green #5CA904 ΔE 0.039
Use #31B441 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.