#31BF5D
Closest named color: Algae Green (#21C36F). oklch(70.9% 0.182 149), rgb(49, 191, 93).
Aa
Black text reads best on this color (8.74:1).
About this color
#31BF5D is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.182 and its hue 149°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Algae Green (#21C36F), ΔE 0.020 away. Black text reads best on it, at 8.74:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.182) |
| Temperature | in between |
| Nearest name | Algae Green (#21C36F) |
| Black text | 8.74:1 |
| White text | 2.40:1 |
Values
| HEX | #31BF5D |
| RGB | rgb(49, 191, 93) |
| HSL | hsl(139, 59%, 47%) |
| OKLCH | oklch(70.9% 0.182 149) |
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 #31BF5D | 2.40:1 | Fails | Lc -51.8 | Large or bold text, headings |
| Black text on #31BF5D | 8.74:1 | AAA | Lc 57.2 | Large or bold text, headings |
| #31BF5D text on white | 2.40:1 | Fails | Lc 46.8 | Large or bold text, headings |
| #31BF5D text on black | 8.74:1 | AAA | Lc -55.2 | 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
#DCF0DE
oklch(93.5% 0.032 148.2)
-
Step 200
200
#BDE5C3
oklch(88.4% 0.062 149.3)
-
Step 300
300
#8BD598
oklch(80.9% 0.113 148.9)
-
Step 400
400 (this color)
#31BF5D
oklch(70.9% 0.182 149)
-
Step 500
500
#00A547
oklch(63% 0.178 149.1)
-
Step 600
600
#008B3A
oklch(55.6% 0.157 148.9)
-
Step 700
700
#007530
oklch(49.1% 0.138 149)
-
Step 800
800
#006026
oklch(42.7% 0.12 149)
-
Step 900
900
#00501E
oklch(37.6% 0.107 148.8)
-
Step 950
950
#00300F
oklch(27% 0.076 148.8)
#31BF5D 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) | #C1AE55 | 0.148 |
| Deuteranopia (no green cones) | #B0A364 | 0.145 |
| Tritanopia (no blue cones) | #00BBA8 | 0.103 |
| Achromatopsia (no color) | #A7A7A7 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31BF5D
#31BF5D
oklch(70.9% 0.182 149)
- #DD72D8
#DD72D8
oklch(70.9% 0.182 329)
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 #31BF5D, closest first.
No curated palette has a color within ΔE 0.04 of #31BF5D.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Algae Green #21C36F ΔE 0.020
- Shamrock Green #02C14D ΔE 0.024
- Cool Green #33B864 ΔE 0.024
- Dark Mint Green #20C073 ΔE 0.024
- Dark Mint #48C072 ΔE 0.030
- Leafy Green #51B73B ΔE 0.032
- Shamrock #01B44C ΔE 0.038
- Turtle Green #75B84F ΔE 0.048
Use #31BF5D 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.