#378E85
Closest named color: Dusty Teal (#4C9085). oklch(59.2% 0.084 185.8), rgb(55, 142, 133).
Aa
Black text reads best on this color (5.37:1).
About this color
#378E85 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.084 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.019 away. Black text reads best on it, at 5.37:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.37:1 |
| White text | 3.91:1 |
Values
| HEX | #378E85 |
| RGB | rgb(55, 142, 133) |
| HSL | hsl(174, 44%, 39%) |
| OKLCH | oklch(59.2% 0.084 185.8) |
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 #378E85 | 3.91:1 | AA large text | Lc -71.8 | Content text, not long reading |
| Black text on #378E85 | 5.37:1 | AA | Lc 37.8 | Non-text elements, placeholder text |
| #378E85 text on white | 3.91:1 | AA large text | Lc 66.3 | Content text, not long reading |
| #378E85 text on black | 5.37:1 | AA | Lc -35.4 | 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
#E2ECEB
oklch(93.5% 0.011 189.8)
-
Step 200
200
#CBDEDB
oklch(88.6% 0.021 185.4)
-
Step 300
300
#A6C9C4
oklch(80.9% 0.038 185.9)
-
Step 400
400
#74ADA6
oklch(70.6% 0.061 186.2)
-
Step 500
500
#4C9990
oklch(63.1% 0.078 185.4)
-
Step 600
600 (this color)
#378E85
oklch(59.2% 0.084 185.8)
-
Step 700
700
#1B6F67
oklch(49.1% 0.078 185.5)
-
Step 800
800
#1A5A54
oklch(42.6% 0.064 186.2)
-
Step 900
900
#1D4A45
oklch(37.6% 0.05 185.5)
-
Step 950
950
#122C29
oklch(27.1% 0.033 185.7)
#378E85 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) | #878685 | 0.089 |
| Deuteranopia (no green cones) | #7A7D86 | 0.084 |
| Tritanopia (no blue cones) | #00918B | 0.020 |
| Achromatopsia (no color) | #818181 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378E85
#378E85
oklch(59.2% 0.084 185.8)
- #A86876
#A86876
oklch(59.1% 0.084 5.8)
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 #378E85, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.019
- Dark Cyan #008B8B ΔE 0.026
- Teal Green #0A9396 ΔE 0.027
- Sea #3C9992 ΔE 0.035
- Blue Green #0F9B8E ΔE 0.037
- Persian Green #2A9D8F ΔE 0.042
- Ocean Green #3D9973 ΔE 0.050
- Slate Green #658D6D ΔE 0.050
Use #378E85 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.