#40AF6E
Closest named color: Seaweed Green (#35AD6B). oklch(67.4% 0.14 154.2), rgb(64, 175, 110).
Aa
Black text reads best on this color (7.57:1).
About this color
#40AF6E is a medium-light, moderately saturated green. In OKLCH its lightness is 67%, its chroma 0.140 and its hue 154°. 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 7.57:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.140) |
| Temperature | in between |
| Nearest name | Seaweed Green (#35AD6B) |
| Black text | 7.57:1 |
| White text | 2.77:1 |
Values
| HEX | #40AF6E |
| RGB | rgb(64, 175, 110) |
| HSL | hsl(145, 46%, 47%) |
| OKLCH | oklch(67.4% 0.14 154.2) |
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 #40AF6E | 2.77:1 | Fails | Lc -58.4 | Large or bold text, headings |
| Black text on #40AF6E | 7.57:1 | AAA | Lc 50.9 | Large or bold text, headings |
| #40AF6E text on white | 2.77:1 | Fails | Lc 53.1 | Large or bold text, headings |
| #40AF6E text on black | 7.57:1 | AAA | Lc -48.7 | 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
#F0F8F2
oklch(97.1% 0.012 153.7)
-
Step 100
100
#DEEFE2
oklch(93.6% 0.025 152.9)
-
Step 200
200
#C1E3CB
oklch(88.5% 0.048 154.6)
-
Step 300
300
#94D2A7
oklch(81% 0.088 153.8)
-
Step 400
400 (this color)
#40AF6E
oklch(67.4% 0.14 154.2)
-
Step 500
500
#00A45B
oklch(63.1% 0.158 154.2)
-
Step 600
600
#008A4C
oklch(55.6% 0.139 154.3)
-
Step 700
700
#00743F
oklch(49.1% 0.123 154.3)
-
Step 800
800
#005F32
oklch(42.6% 0.107 154.1)
-
Step 900
900
#005029
oklch(37.8% 0.096 153.9)
-
Step 950
950
#003016
oklch(27.1% 0.069 153.7)
#40AF6E 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) | #AFA16A | 0.124 |
| Deuteranopia (no green cones) | #A09772 | 0.120 |
| Tritanopia (no blue cones) | #0CAD9E | 0.069 |
| Achromatopsia (no color) | #9B9B9B | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40AF6E
#40AF6E
oklch(67.4% 0.14 154.2)
- #C973B9
#C973B9
oklch(67.3% 0.139 334.2)
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 #40AF6E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed Green #35AD6B ΔE 0.010
- Dark Seafoam Green #3EAF76 ΔE 0.010
- Medium Sea Green #3CB371 ΔE 0.011
- Jade Green #2BAF6A ΔE 0.013
- Algae #54AC68 ΔE 0.015
- Bluey Green #2BB179 ΔE 0.015
- Dark Seafoam #1FB57A ΔE 0.020
- Green Teal #0CB577 ΔE 0.021
Use #40AF6E 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.