#378784
Closest named color: Dark Cyan (#008B8B). oklch(57.4% 0.078 191.8), rgb(55, 135, 132).
Aa
Black text reads best on this color (4.96:1).
About this color
#378784 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.078 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.022 away. Black text reads best on it, at 4.96:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.96:1 |
| White text | 4.23:1 |
Values
| HEX | #378784 |
| RGB | rgb(55, 135, 132) |
| HSL | hsl(178, 42%, 37%) |
| OKLCH | oklch(57.4% 0.078 191.8) |
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 #378784 | 4.23:1 | AA large text | Lc -74.5 | Content text, not long reading |
| Black text on #378784 | 4.96:1 | AA | Lc 35.1 | Non-text elements, placeholder text |
| #378784 text on white | 4.23:1 | AA large text | Lc 69.0 | Content text, not long reading |
| #378784 text on black | 4.96:1 | AA | Lc -32.7 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CBDDDC
oklch(88.4% 0.019 192.8)
-
Step 300
300
#A8C8C6
oklch(80.9% 0.034 191.8)
-
Step 400
400
#77ACA9
oklch(70.7% 0.056 191.5)
-
Step 500
500
#519794
oklch(63% 0.071 191.9)
-
Step 600
600 (this color)
#378784
oklch(57.4% 0.078 191.8)
-
Step 700
700
#226E6B
oklch(49.2% 0.073 191.3)
-
Step 800
800
#1F5957
oklch(42.6% 0.059 192)
-
Step 900
900
#204948
oklch(37.6% 0.046 193.3)
-
Step 950
950
#142B2A
oklch(27% 0.029 191.9)
#378784 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) | #7F8184 | 0.081 |
| Deuteranopia (no green cones) | #737785 | 0.077 |
| Tritanopia (no blue cones) | #008B86 | 0.022 |
| Achromatopsia (no color) | #7B7B7B | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378784
#378784
oklch(57.4% 0.078 191.8)
- #A1656C
#A1656C
oklch(57.4% 0.078 12.2)
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 #378784, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.022
- Teal #008080 ΔE 0.034
- Dusty Teal #4C9085 ΔE 0.035
- Teal Green #0A9396 ΔE 0.038
- Teal Blue #01889F ΔE 0.044
- Bluegreen #017A79 ΔE 0.051
- Sea #3C9992 ΔE 0.054
- Deep Aqua #08787F ΔE 0.054
Use #378784 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.