#338F63
Closest named color: Viridian (#1E9167). oklch(58.4% 0.111 159), rgb(51, 143, 99).
Aa
Black text reads best on this color (5.24:1).
About this color
#338F63 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.111 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.011 away. Black text reads best on it, at 5.24:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.111) |
| Temperature | in between |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.24:1 |
| White text | 4.00:1 |
Values
| HEX | #338F63 |
| RGB | rgb(51, 143, 99) |
| HSL | hsl(151, 47%, 38%) |
| OKLCH | oklch(58.4% 0.111 159) |
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 #338F63 | 4.00:1 | AA large text | Lc -72.5 | Content text, not long reading |
| Black text on #338F63 | 5.24:1 | AA | Lc 37.1 | Non-text elements, placeholder text |
| #338F63 text on white | 4.00:1 | AA large text | Lc 67.0 | Content text, not long reading |
| #338F63 text on black | 5.24:1 | AA | Lc -34.6 | 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
#CBDFD3
oklch(88.5% 0.027 159.5)
-
Step 300
300
#A6CBB5
oklch(80.9% 0.05 159)
-
Step 400
400
#74B08F
oklch(70.7% 0.079 159.4)
-
Step 500
500
#4C9C73
oklch(63.1% 0.101 159.2)
-
Step 600
600 (this color)
#338F63
oklch(58.4% 0.111 159)
-
Step 700
700
#19724B
oklch(49.1% 0.103 159.2)
-
Step 800
800
#195D3E
oklch(42.8% 0.085 159.3)
-
Step 900
900
#1D4C35
oklch(37.7% 0.065 159.5)
-
Step 950
950
#122D1F
oklch(27.1% 0.043 159.1)
#338F63 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) | #8E8460 | 0.104 |
| Deuteranopia (no green cones) | #817C66 | 0.100 |
| Tritanopia (no blue cones) | #008E83 | 0.049 |
| Achromatopsia (no color) | #7F7F7F | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #338F63
#338F63
oklch(58.4% 0.111 159)
- #A66091
#A66091
oklch(58.4% 0.111 339.2)
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 #338F63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.011
- Sea Green #2E8B57 ΔE 0.019
- Light Forest Green #4F9153 ΔE 0.030
- Ocean Green #3D9973 ΔE 0.035
- Dark Sage #598556 ΔE 0.039
- Fern Green #548D44 ΔE 0.041
- Slate Green #658D6D ΔE 0.051
- Dusty Teal #4C9085 ΔE 0.057
Use #338F63 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.