#31AB64
Closest named color: Seaweed Green (#35AD6B). oklch(65.8% 0.149 153.2), rgb(49, 171, 100).
Aa
Black text reads best on this color (7.13:1).
About this color
#31AB64 is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.149 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed Green (#35AD6B), ΔE 0.010 away. Black text reads best on it, at 7.13:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Seaweed Green (#35AD6B) |
| Black text | 7.13:1 |
| White text | 2.94:1 |
Values
| HEX | #31AB64 |
| RGB | rgb(49, 171, 100) |
| HSL | hsl(145, 55%, 43%) |
| OKLCH | oklch(65.8% 0.149 153.2) |
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 #31AB64 | 2.94:1 | Fails | Lc -60.8 | Content text, not long reading |
| Black text on #31AB64 | 7.13:1 | AAA | Lc 48.6 | Large or bold text, headings |
| #31AB64 text on white | 2.94:1 | Fails | Lc 55.5 | Large or bold text, headings |
| #31AB64 text on black | 7.13:1 | AAA | Lc -46.3 | 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
#F1F7F2
oklch(97% 0.009 150.7)
-
Step 100
100
#E0EEE3
oklch(93.6% 0.021 152.2)
-
Step 200
200
#C6E1CD
oklch(88.4% 0.039 153.4)
-
Step 300
300
#9DCFAB
oklch(81% 0.073 153.3)
-
Step 400
400
#61B67E
oklch(70.8% 0.117 153.4)
-
Step 500
500 (this color)
#31AB64
oklch(65.8% 0.149 153.2)
-
Step 600
600
#008A49
oklch(55.5% 0.142 153.3)
-
Step 700
700
#00743C
oklch(49% 0.126 153.1)
-
Step 800
800
#005F30
oklch(42.6% 0.109 153.1)
-
Step 900
900
#005027
oklch(37.8% 0.098 152.9)
-
Step 950
950
#072F17
oklch(27.1% 0.062 152.7)
#31AB64 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) | #AB9D5F | 0.129 |
| Deuteranopia (no green cones) | #9C9269 | 0.128 |
| Tritanopia (no blue cones) | #00A999 | 0.076 |
| Achromatopsia (no color) | #969696 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31AB64
#31AB64
oklch(65.8% 0.149 153.2)
- #C66BB8
#C66BB8
oklch(65.7% 0.15 333.1)
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 #31AB64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed Green #35AD6B ΔE 0.010
- Jade Green #2BAF6A ΔE 0.012
- Algae #54AC68 ΔE 0.025
- Dark Seafoam Green #3EAF76 ΔE 0.026
- Medium Sea Green #3CB371 ΔE 0.027
- Bluey Green #2BB179 ΔE 0.027
- Jade #1FA774 ΔE 0.028
- Dark Pastel Green #56AE57 ΔE 0.030
Use #31AB64 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.