#378771
Closest named color: Dark Cyan (#008B8B). oklch(56.7% 0.086 172.2), rgb(55, 135, 113).
Aa
Black text reads best on this color (4.86:1).
About this color
#378771 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.086 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.039 away. Black text reads best on it, at 4.86:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.86:1 |
| White text | 4.31:1 |
Values
| HEX | #378771 |
| RGB | rgb(55, 135, 113) |
| HSL | hsl(163, 42%, 37%) |
| OKLCH | oklch(56.7% 0.086 172.2) |
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 #378771 | 4.31:1 | AA large text | Lc -75.1 | Fine for body text |
| Black text on #378771 | 4.86:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #378771 text on white | 4.31:1 | AA large text | Lc 69.6 | Content text, not long reading |
| #378771 text on black | 4.86:1 | AA | Lc -32.0 | 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
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CCDED7
oklch(88.5% 0.021 170.6)
-
Step 300
300
#A8C9BE
oklch(80.8% 0.039 173.1)
-
Step 400
400
#78AE9C
oklch(70.8% 0.063 171.6)
-
Step 500
500
#539984
oklch(63.1% 0.078 172.2)
-
Step 600
600 (this color)
#378771
oklch(56.7% 0.086 172.2)
-
Step 700
700
#256F5C
oklch(49.1% 0.079 172.7)
-
Step 800
800
#215B4B
oklch(42.8% 0.066 171.9)
-
Step 900
900
#214A3E
oklch(37.5% 0.051 172)
-
Step 950
950
#142C25
oklch(27.1% 0.033 172.8)
#378771 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) | #837F70 | 0.088 |
| Deuteranopia (no green cones) | #777673 | 0.085 |
| Tritanopia (no blue cones) | #008881 | 0.029 |
| Achromatopsia (no color) | #7A7A7A | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378771
#378771
oklch(56.7% 0.086 172.2)
- #9E617C
#9E617C
oklch(56.8% 0.086 352.1)
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 #378771, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.039
- Viridian #1E9167 ΔE 0.040
- Dusty Teal #4C9085 ΔE 0.043
- Teal #008080 ΔE 0.043
- Dark Sage #598556 ΔE 0.044
- Sea Green #2E8B57 ΔE 0.045
- Slate Green #658D6D ΔE 0.051
- Bluegreen #017A79 ΔE 0.054
Use #378771 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.