#378C80
Closest named color: Dusty Teal (#4C9085). oklch(58.5% 0.084 182.6), rgb(55, 140, 128).
Aa
Black text reads best on this color (5.22:1).
About this color
#378C80 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.084 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.023 away. Black text reads best on it, at 5.22:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.22:1 |
| White text | 4.01:1 |
Values
| HEX | #378C80 |
| RGB | rgb(55, 140, 128) |
| HSL | hsl(172, 44%, 38%) |
| OKLCH | oklch(58.5% 0.084 182.6) |
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 #378C80 | 4.01:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #378C80 | 5.22:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #378C80 text on white | 4.01:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #378C80 text on black | 5.22:1 | AA | Lc -34.4 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEA
oklch(93.5% 0.011 182.9)
-
Step 200
200
#CBDEDA
oklch(88.5% 0.021 181.8)
-
Step 300
300
#A7C9C3
oklch(80.9% 0.037 183.5)
-
Step 400
400
#76ADA4
oklch(70.7% 0.059 183.3)
-
Step 500
500
#4E998D
oklch(63.1% 0.077 182.1)
-
Step 600
600 (this color)
#378C80
oklch(58.5% 0.084 182.6)
-
Step 700
700
#1E6F64
oklch(49.1% 0.078 182)
-
Step 800
800
#1C5A52
oklch(42.6% 0.064 183.2)
-
Step 900
900
#1E4A44
oklch(37.6% 0.05 183.5)
-
Step 950
950
#132C28
oklch(27.2% 0.032 182.2)
#378C80 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) | #868480 | 0.089 |
| Deuteranopia (no green cones) | #797B81 | 0.084 |
| Tritanopia (no blue cones) | #008F88 | 0.021 |
| Achromatopsia (no color) | #7F7F7F | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378C80
#378C80
oklch(58.5% 0.084 182.6)
- #A56677
#A56677
oklch(58.4% 0.084 2.5)
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 #378C80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.023
- Dark Cyan #008B8B ΔE 0.026
- Teal Green #0A9396 ΔE 0.034
- Sea #3C9992 ΔE 0.042
- Blue Green #0F9B8E ΔE 0.043
- Teal #008080 ΔE 0.047
- Viridian #1E9167 ΔE 0.048
- Persian Green #2A9D8F ΔE 0.049
Use #378C80 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.