#40B368
Closest named color: Medium Sea Green (#3CB371). oklch(68.3% 0.151 151.6), rgb(64, 179, 104).
Aa
Black text reads best on this color (7.86:1).
About this color
#40B368 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.151 and its hue 152°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Sea Green (#3CB371), ΔE 0.011 away. Black text reads best on it, at 7.86:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Medium Sea Green (#3CB371) |
| Black text | 7.86:1 |
| White text | 2.66:1 |
Values
| HEX | #40B368 |
| RGB | rgb(64, 179, 104) |
| HSL | hsl(141, 47%, 48%) |
| OKLCH | oklch(68.3% 0.151 151.6) |
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 #40B368 | 2.66:1 | Fails | Lc -56.7 | Large or bold text, headings |
| Black text on #40B368 | 7.86:1 | AAA | Lc 52.5 | Large or bold text, headings |
| #40B368 text on white | 2.66:1 | Fails | Lc 51.5 | Large or bold text, headings |
| #40B368 text on black | 7.86:1 | AAA | Lc -50.3 | 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 400.
-
Step 50
50
#F0F8F1
oklch(97.1% 0.013 149.3)
-
Step 100
100
#DDEFE1
oklch(93.5% 0.027 152.4)
-
Step 200
200
#C1E4C8
oklch(88.6% 0.053 151.1)
-
Step 300
300
#92D2A2
oklch(80.8% 0.094 151.7)
-
Step 400
400 (this color)
#40B368
oklch(68.3% 0.151 151.6)
-
Step 500
500
#00A552
oklch(63.2% 0.168 151.6)
-
Step 600
600
#008B44
oklch(55.7% 0.148 151.5)
-
Step 700
700
#007538
oklch(49.2% 0.131 151.5)
-
Step 800
800
#00602D
oklch(42.8% 0.114 151.6)
-
Step 900
900
#005024
oklch(37.7% 0.101 151.4)
-
Step 950
950
#003013
oklch(27.1% 0.072 151.4)
#40B368 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) | #B4A563 | 0.128 |
| Deuteranopia (no green cones) | #A59A6D | 0.126 |
| Tritanopia (no blue cones) | #10B0A1 | 0.082 |
| Achromatopsia (no color) | #9E9E9E | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40B368
#40B368
oklch(68.3% 0.151 151.6)
- #CE73C3
#CE73C3
oklch(68.3% 0.152 331.7)
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 #40B368, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Sea Green #3CB371 ΔE 0.011
- Cool Green #33B864 ΔE 0.018
- Jade Green #2BAF6A ΔE 0.018
- Seaweed Green #35AD6B ΔE 0.021
- Dark Pastel Green #56AE57 ΔE 0.022
- Green Teal #0CB577 ΔE 0.022
- Dark Seafoam #1FB57A ΔE 0.023
- Algae #54AC68 ΔE 0.023
Use #40B368 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.