#338C59
Closest named color: Sea Green (#2E8B57). oklch(57.3% 0.116 154.8), rgb(51, 140, 89).
Aa
Black text reads best on this color (5.03:1).
About this color
#338C59 is a medium-dark, moderately saturated green. In OKLCH its lightness is 57%, its chroma 0.116 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 0.005 away. Black text reads best on it, at 5.03:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 5.03:1 |
| White text | 4.16:1 |
Values
| HEX | #338C59 |
| RGB | rgb(51, 140, 89) |
| HSL | hsl(146, 47%, 37%) |
| OKLCH | oklch(57.3% 0.116 154.8) |
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 #338C59 | 4.16:1 | AA large text | Lc -73.9 | Content text, not long reading |
| Black text on #338C59 | 5.03:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #338C59 text on white | 4.16:1 | AA large text | Lc 68.4 | Content text, not long reading |
| #338C59 text on black | 5.03:1 | AA | Lc -33.2 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E2EDE5
oklch(93.6% 0.016 154.5)
-
Step 200
200
#CBDFD1
oklch(88.5% 0.029 155.2)
-
Step 300
300
#A7CBB2
oklch(80.9% 0.052 154.8)
-
Step 400
400
#76B08A
oklch(70.7% 0.082 155)
-
Step 500
500
#4E9C6C
oklch(63% 0.107 154.8)
-
Step 600
600 (this color)
#338C59
oklch(57.3% 0.116 154.8)
-
Step 700
700
#1E7244
oklch(49.1% 0.108 154.6)
-
Step 800
800
#1C5D38
oklch(42.7% 0.09 154.5)
-
Step 900
900
#1E4C31
oklch(37.6% 0.069 155.2)
-
Step 950
950
#132D1D
oklch(27.1% 0.044 155)
#338C59 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) | #8C8156 | 0.104 |
| Deuteranopia (no green cones) | #80795C | 0.101 |
| Tritanopia (no blue cones) | #0C8B7F | 0.057 |
| Achromatopsia (no color) | #7C7C7C | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #338C59
#338C59
oklch(57.3% 0.116 154.8)
- #A15C93
#A15C93
oklch(57.2% 0.115 334.9)
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 #338C59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.005
- Viridian #1E9167 ΔE 0.020
- Light Forest Green #4F9153 ΔE 0.030
- Fern Green #548D44 ΔE 0.035
- Dark Sage #598556 ΔE 0.037
- Jungle Green #048243 ΔE 0.046
- Ocean Green #3D9973 ΔE 0.048
- Moss Green #658B38 ΔE 0.054
Use #338C59 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.