#338C5D
Closest named color: Sea Green (#2E8B57). oklch(57.4% 0.112 156.8), rgb(51, 140, 93).
Aa
Black text reads best on this color (5.05:1).
About this color
#338C5D is a medium-dark, moderately saturated green. In OKLCH its lightness is 57%, its chroma 0.112 and its hue 157°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.009 away. Black text reads best on it, at 5.05:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.112) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 5.05:1 |
| White text | 4.15:1 |
Values
| HEX | #338C5D |
| RGB | rgb(51, 140, 93) |
| HSL | hsl(148, 47%, 37%) |
| OKLCH | oklch(57.4% 0.112 156.8) |
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 #338C5D | 4.15:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #338C5D | 5.05:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #338C5D text on white | 4.15:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #338C5D text on black | 5.05:1 | AA | Lc -33.3 | 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
#E2EDE6
oklch(93.6% 0.015 158.2)
-
Step 200
200
#CBDFD2
oklch(88.5% 0.028 157.3)
-
Step 300
300
#A7CBB4
oklch(80.9% 0.05 157.1)
-
Step 400
400
#76B08C
oklch(70.7% 0.081 156.4)
-
Step 500
500
#4E9C70
oklch(63.1% 0.103 157)
-
Step 600
600 (this color)
#338C5D
oklch(57.4% 0.112 156.8)
-
Step 700
700
#1D7248
oklch(49.1% 0.104 156.9)
-
Step 800
800
#1C5D3B
oklch(42.8% 0.087 156.5)
-
Step 900
900
#1E4C33
oklch(37.7% 0.067 157.1)
-
Step 950
950
#132D1E
oklch(27.1% 0.043 156.6)
#338C5D 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) | #8B815A | 0.102 |
| Deuteranopia (no green cones) | #7F7960 | 0.099 |
| Tritanopia (no blue cones) | #068B80 | 0.053 |
| Achromatopsia (no color) | #7C7C7C | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #338C5D
#338C5D
oklch(57.4% 0.112 156.8)
- #A25D91
#A25D91
oklch(57.4% 0.113 336.8)
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 #338C5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.009
- Viridian #1E9167 ΔE 0.017
- Light Forest Green #4F9153 ΔE 0.032
- Dark Sage #598556 ΔE 0.036
- Fern Green #548D44 ΔE 0.039
- Ocean Green #3D9973 ΔE 0.045
- Jungle Green #048243 ΔE 0.050
- Slate Green #658D6D ΔE 0.056
Use #338C5D 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.