#408B5E
Closest named color: Sea Green (#2E8B57). oklch(57.6% 0.103 155), rgb(64, 139, 94).
Aa
Black text reads best on this color (5.07:1).
About this color
#408B5E is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.103 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.018 away. Black text reads best on it, at 5.07:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.103) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 5.07:1 |
| White text | 4.13:1 |
Values
| HEX | #408B5E |
| RGB | rgb(64, 139, 94) |
| HSL | hsl(144, 37%, 40%) |
| OKLCH | oklch(57.6% 0.103 155) |
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 #408B5E | 4.13:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #408B5E | 5.07:1 | AA | Lc 35.8 | Non-text elements, placeholder text |
| #408B5E text on white | 4.13:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #408B5E text on black | 5.07:1 | AA | Lc -33.4 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E3EDE6
oklch(93.7% 0.014 155.6)
-
Step 200
200
#CDDED2
oklch(88.4% 0.024 155.1)
-
Step 300
300
#AACAB4
oklch(80.9% 0.046 155.2)
-
Step 400
400
#7BAF8D
oklch(70.8% 0.074 155.4)
-
Step 500
500
#579A70
oklch(63% 0.094 155.1)
-
Step 600
600 (this color)
#408B5E
oklch(57.6% 0.103 155)
-
Step 700
700
#2B7048
oklch(49% 0.095 155)
-
Step 800
800
#255C3B
oklch(42.8% 0.08 154.6)
-
Step 900
900
#244B33
oklch(37.7% 0.061 155.1)
-
Step 950
950
#162C1E
oklch(27% 0.039 154.9)
#408B5E 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) | #8B815B | 0.093 |
| Deuteranopia (no green cones) | #807A61 | 0.089 |
| Tritanopia (no blue cones) | #2B8A7F | 0.050 |
| Achromatopsia (no color) | #7D7D7D | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #408B5E
#408B5E
oklch(57.6% 0.103 155)
- #9E6191
#9E6191
oklch(57.6% 0.102 335)
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 #408B5E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.018
- Viridian #1E9167 ΔE 0.023
- Dark Sage #598556 ΔE 0.026
- Light Forest Green #4F9153 ΔE 0.030
- Fern Green #548D44 ΔE 0.037
- Ocean Green #3D9973 ΔE 0.043
- Slate Green #658D6D ΔE 0.047
- Moss Green #658B38 ΔE 0.053
Use #408B5E 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.