#3DB581
Closest named color: Dark Seafoam (#1FB57A). oklch(69.3% 0.132 160.9), rgb(61, 181, 129).
Aa
Black text reads best on this color (8.12:1).
About this color
#3DB581 is a medium-light, moderately saturated green. In OKLCH its lightness is 69%, its chroma 0.132 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Seafoam (#1FB57A), ΔE 0.018 away. Black text reads best on it, at 8.12:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.132) |
| Temperature | in between |
| Nearest name | Dark Seafoam (#1FB57A) |
| Black text | 8.12:1 |
| White text | 2.58:1 |
Values
| HEX | #3DB581 |
| RGB | rgb(61, 181, 129) |
| HSL | hsl(154, 50%, 47%) |
| OKLCH | oklch(69.3% 0.132 160.9) |
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 #3DB581 | 2.58:1 | Fails | Lc -55.3 | Large or bold text, headings |
| Black text on #3DB581 | 8.12:1 | AAA | Lc 53.8 | Large or bold text, headings |
| #3DB581 text on white | 2.58:1 | Fails | Lc 50.2 | Large or bold text, headings |
| #3DB581 text on black | 8.12:1 | AAA | Lc -51.8 | 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
#EFF8F3
oklch(97.1% 0.012 162.1)
-
Step 100
100
#DDEFE5
oklch(93.6% 0.023 161.7)
-
Step 200
200
#C0E3CF
oklch(88.5% 0.046 160.3)
-
Step 300
300
#90D2AF
oklch(81% 0.084 160.6)
-
Step 400
400 (this color)
#3DB581
oklch(69.3% 0.132 160.9)
-
Step 500
500
#00A36D
oklch(63.2% 0.141 160.9)
-
Step 600
600
#00895B
oklch(55.6% 0.124 161)
-
Step 700
700
#00734C
oklch(49.1% 0.109 161.2)
-
Step 800
800
#005E3D
oklch(42.6% 0.095 160.9)
-
Step 900
900
#004F32
oklch(37.7% 0.085 160.4)
-
Step 950
950
#002F1C
oklch(26.9% 0.06 160.5)
#3DB581 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) | #B3A87E | 0.126 |
| Deuteranopia (no green cones) | #A39C84 | 0.123 |
| Tritanopia (no blue cones) | #00B4A7 | 0.055 |
| Achromatopsia (no color) | #A1A1A1 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3DB581
#3DB581
oklch(69.3% 0.132 160.9)
- #D27AB5
#D27AB5
oklch(69.3% 0.131 340.6)
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 #3DB581, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Seafoam #1FB57A ΔE 0.018
- Bluey Green #2BB179 ΔE 0.018
- Dark Seafoam Green #3EAF76 ΔE 0.019
- Medium Sea Green #3CB371 ΔE 0.021
- Green Teal #0CB577 ΔE 0.024
- Green Blue #01C08D ΔE 0.031
- Greeny Blue #42B395 ΔE 0.031
- Seaweed Green #35AD6B ΔE 0.034
Use #3DB581 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.