#378788
Closest named color: Dark Cyan (#008B8B). oklch(57.5% 0.077 196.4), rgb(55, 135, 136).
Aa
Black text reads best on this color (4.98:1).
About this color
#378788 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.077 and its hue 196°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.021 away. Black text reads best on it, at 4.98:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.98:1 |
| White text | 4.21:1 |
Values
| HEX | #378788 |
| RGB | rgb(55, 135, 136) |
| HSL | hsl(181, 42%, 37%) |
| OKLCH | oklch(57.5% 0.077 196.4) |
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 #378788 | 4.21:1 | AA large text | Lc -74.3 | Content text, not long reading |
| Black text on #378788 | 4.98:1 | AA | Lc 35.2 | Non-text elements, placeholder text |
| #378788 text on white | 4.21:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #378788 text on black | 4.98:1 | AA | Lc -32.8 | 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
#CBDDDD
oklch(88.4% 0.019 196.8)
-
Step 300
300
#A8C8C8
oklch(80.9% 0.034 196.5)
-
Step 400
400
#77ACAC
oklch(70.8% 0.056 196)
-
Step 500
500
#519798
oklch(63.1% 0.071 196.7)
-
Step 600
600 (this color)
#378788
oklch(57.5% 0.077 196.4)
-
Step 700
700
#226D6E
oklch(49% 0.072 196.4)
-
Step 800
800
#1F595A
oklch(42.7% 0.059 196.8)
-
Step 900
900
#20494A
oklch(37.7% 0.046 197.5)
-
Step 950
950
#142B2B
oklch(27% 0.029 195.6)
#378788 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) | #7E8188 | 0.079 |
| Deuteranopia (no green cones) | #717789 | 0.075 |
| Tritanopia (no blue cones) | #008B87 | 0.023 |
| Achromatopsia (no color) | #7B7B7B | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378788
#378788
oklch(57.5% 0.077 196.4)
- #A16669
#A16669
oklch(57.5% 0.076 16.4)
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 #378788, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.021
- Teal #008080 ΔE 0.036
- Dusty Teal #4C9085 ΔE 0.036
- Teal Green #0A9396 ΔE 0.036
- Teal Blue #01889F ΔE 0.038
- Ocean #017B92 ΔE 0.052
- Bluegreen #017A79 ΔE 0.052
- Sea #3C9992 ΔE 0.053
Use #378788 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.