#378C72
Closest named color: Viridian (#1E9167). oklch(58.1% 0.092 169.8), rgb(55, 140, 114).
Aa
Black text reads best on this color (5.15:1).
About this color
#378C72 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.092 and its hue 170°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.029 away. Black text reads best on it, at 5.15:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.092) |
| Temperature | in between |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.15:1 |
| White text | 4.07:1 |
Values
| HEX | #378C72 |
| RGB | rgb(55, 140, 114) |
| HSL | hsl(162, 44%, 38%) |
| OKLCH | oklch(58.1% 0.092 169.8) |
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 #378C72 | 4.07:1 | AA large text | Lc -73.2 | Content text, not long reading |
| Black text on #378C72 | 5.15:1 | AA | Lc 36.4 | Non-text elements, placeholder text |
| #378C72 text on white | 4.07:1 | AA large text | Lc 67.7 | Content text, not long reading |
| #378C72 text on black | 5.15:1 | AA | Lc -34.0 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3EDE8
oklch(93.7% 0.013 164.8)
-
Step 200
200
#CBDED7
oklch(88.4% 0.022 171.7)
-
Step 300
300
#A7CABC
oklch(80.9% 0.042 169)
-
Step 400
400
#76AE9A
oklch(70.6% 0.066 170)
-
Step 500
500
#4F9A81
oklch(63.1% 0.085 169.6)
-
Step 600
600 (this color)
#378C72
oklch(58.1% 0.092 169.8)
-
Step 700
700
#1F7059
oklch(49.1% 0.085 169.9)
-
Step 800
800
#1D5B49
oklch(42.6% 0.07 170.3)
-
Step 900
900
#1F4B3D
oklch(37.7% 0.055 169.9)
-
Step 950
950
#132C24
oklch(27% 0.035 170.7)
#378C72 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) | #888371 | 0.093 |
| Deuteranopia (no green cones) | #7C7A74 | 0.090 |
| Tritanopia (no blue cones) | #008D84 | 0.030 |
| Achromatopsia (no color) | #7E7E7E | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378C72
#378C72
oklch(58.1% 0.092 169.8)
- #A36382
#A36382
oklch(58% 0.092 349.9)
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 #378C72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.029
- Dusty Teal #4C9085 ΔE 0.036
- Sea Green #2E8B57 ΔE 0.040
- Ocean Green #3D9973 ΔE 0.041
- Dark Cyan #008B8B ΔE 0.042
- Dark Sage #598556 ΔE 0.043
- Slate Green #658D6D ΔE 0.044
- Blue Green #0F9B8E ΔE 0.050
Use #378C72 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.