#378E6D
Closest named color: Viridian (#1E9167). oklch(58.5% 0.098 165), rgb(55, 142, 109).
Aa
Black text reads best on this color (5.25:1).
About this color
#378E6D is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.098 and its hue 165°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.020 away. Black text reads best on it, at 5.25:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.098) |
| Temperature | in between |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.25:1 |
| White text | 3.99:1 |
Values
| HEX | #378E6D |
| RGB | rgb(55, 142, 109) |
| HSL | hsl(157, 44%, 39%) |
| OKLCH | oklch(58.5% 0.098 165) |
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 #378E6D | 3.99:1 | AA large text | Lc -72.5 | Content text, not long reading |
| Black text on #378E6D | 5.25:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #378E6D text on white | 3.99:1 | AA large text | Lc 67.0 | Content text, not long reading |
| #378E6D text on black | 5.25:1 | 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
#E2EDE8
oklch(93.6% 0.013 167.2)
-
Step 200
200
#CBDFD5
oklch(88.6% 0.025 164.4)
-
Step 300
300
#A7CAB9
oklch(80.9% 0.044 164.3)
-
Step 400
400
#76AF96
oklch(70.7% 0.07 165.3)
-
Step 500
500
#4E9B7C
oklch(63.1% 0.091 165.2)
-
Step 600
600 (this color)
#378E6D
oklch(58.5% 0.098 165)
-
Step 700
700
#1E7154
oklch(49.2% 0.091 165.2)
-
Step 800
800
#1C5C44
oklch(42.7% 0.076 164.5)
-
Step 900
900
#1E4B3A
oklch(37.6% 0.058 165.9)
-
Step 950
950
#132C22
oklch(26.9% 0.037 165.7)
#378E6D 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) | #8B846B | 0.097 |
| Deuteranopia (no green cones) | #7F7C6F | 0.093 |
| Tritanopia (no blue cones) | #008E85 | 0.038 |
| Achromatopsia (no color) | #7F7F7F | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378E6D
#378E6D
oklch(58.5% 0.098 165)
- #A56389
#A56389
oklch(58.5% 0.098 345)
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 #378E6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.020
- Sea Green #2E8B57 ΔE 0.032
- Ocean Green #3D9973 ΔE 0.033
- Dark Sage #598556 ΔE 0.040
- Light Forest Green #4F9153 ΔE 0.042
- Dusty Teal #4C9085 ΔE 0.042
- Slate Green #658D6D ΔE 0.044
- Blue Green #0F9B8E ΔE 0.051
Use #378E6D 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.