#398B66
Closest named color: Viridian (#1E9167). oklch(57.6% 0.099 161.3), rgb(57, 139, 102).
Aa
Black text reads best on this color (5.05:1).
About this color
#398B66 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.099 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.021 away. Black text reads best on it, at 5.05:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.099) |
| Temperature | in between |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.05:1 |
| White text | 4.15:1 |
Values
| HEX | #398B66 |
| RGB | rgb(57, 139, 102) |
| HSL | hsl(153, 42%, 38%) |
| OKLCH | oklch(57.6% 0.099 161.3) |
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 #398B66 | 4.15:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #398B66 | 5.05:1 | AA | Lc 35.8 | Non-text elements, placeholder text |
| #398B66 text on white | 4.15:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #398B66 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
#E3EDE7
oklch(93.7% 0.013 159.9)
-
Step 200
200
#CCDED4
oklch(88.4% 0.024 161.7)
-
Step 300
300
#A8CAB7
oklch(80.9% 0.045 160.7)
-
Step 400
400
#78AF92
oklch(70.7% 0.072 160.8)
-
Step 500
500
#529B78
oklch(63.2% 0.091 161.4)
-
Step 600
600 (this color)
#398B66
oklch(57.6% 0.099 161.3)
-
Step 700
700
#247150
oklch(49.2% 0.092 161.3)
-
Step 800
800
#205C41
oklch(42.8% 0.077 160.8)
-
Step 900
900
#214B37
oklch(37.6% 0.059 161)
-
Step 950
950
#142C20
oklch(26.9% 0.038 160.6)
#398B66 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) | #898164 | 0.095 |
| Deuteranopia (no green cones) | #7E7968 | 0.092 |
| Tritanopia (no blue cones) | #168B81 | 0.041 |
| Achromatopsia (no color) | #7C7C7C | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #398B66
#398B66
oklch(57.6% 0.099 161.3)
- #A0618A
#A0618A
oklch(57.6% 0.098 341.2)
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 #398B66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.021
- Sea Green #2E8B57 ΔE 0.024
- Dark Sage #598556 ΔE 0.033
- Light Forest Green #4F9153 ΔE 0.040
- Ocean Green #3D9973 ΔE 0.042
- Slate Green #658D6D ΔE 0.047
- Fern Green #548D44 ΔE 0.049
- Dusty Teal #4C9085 ΔE 0.051
Use #398B66 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.