#378387
Closest named color: Dark Cyan (#008B8B). oklch(56.4% 0.074 200), rgb(55, 131, 135).
Aa
Black text reads best on this color (4.75:1).
About this color
#378387 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.074 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.028 away. Black text reads best on it, at 4.75:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.75:1 |
| White text | 4.41:1 |
Values
| HEX | #378387 |
| RGB | rgb(55, 131, 135) |
| HSL | hsl(183, 42%, 37%) |
| OKLCH | oklch(56.4% 0.074 200) |
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 #378387 | 4.41:1 | AA large text | Lc -75.9 | Fine for body text |
| Black text on #378387 | 4.75:1 | AA | Lc 33.7 | Non-text elements, placeholder text |
| #378387 text on white | 4.41:1 | AA large text | Lc 70.4 | Content text, not long reading |
| #378387 text on black | 4.75:1 | AA | Lc -31.3 | 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
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CCDDDE
oklch(88.5% 0.018 201.1)
-
Step 300
300
#A8C8C9
oklch(81% 0.034 198.8)
-
Step 400
400
#79ABAE
oklch(70.7% 0.053 200.7)
-
Step 500
500
#53969A
oklch(63% 0.068 200.6)
-
Step 600
600 (this color)
#378387
oklch(56.4% 0.074 200)
-
Step 700
700
#266C70
oklch(49% 0.069 200.5)
-
Step 800
800
#21585B
oklch(42.6% 0.057 200.2)
-
Step 900
900
#21494B
oklch(37.7% 0.045 199.8)
-
Step 950
950
#142B2C
oklch(27.1% 0.029 199.2)
#378387 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) | #7A7E87 | 0.075 |
| Deuteranopia (no green cones) | #6D7487 | 0.070 |
| Tritanopia (no blue cones) | #008784 | 0.025 |
| Achromatopsia (no color) | #787878 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378387
#378387
oklch(56.4% 0.074 200)
- #9D6463
#9D6463
oklch(56.5% 0.074 20.8)
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 #378387, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.028
- Teal #008080 ΔE 0.029
- Teal Blue #01889F ΔE 0.038
- Ocean #017B92 ΔE 0.042
- Bluegreen #017A79 ΔE 0.044
- Deep Aqua #08787F ΔE 0.044
- Teal Green #0A9396 ΔE 0.046
- Dusty Teal #4C9085 ΔE 0.047
Use #378387 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.