#378981
Closest named color: Dark Cyan (#008B8B). oklch(57.8% 0.08 186.4), rgb(55, 137, 129).
Aa
Black text reads best on this color (5.05:1).
About this color
#378981 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.080 and its hue 186°. 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 5.05:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.05:1 |
| White text | 4.15:1 |
Values
| HEX | #378981 |
| RGB | rgb(55, 137, 129) |
| HSL | hsl(174, 43%, 38%) |
| OKLCH | oklch(57.8% 0.08 186.4) |
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 #378981 | 4.15:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #378981 | 5.05:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #378981 text on white | 4.15:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #378981 text on black | 5.05:1 | AA | Lc -33.3 | 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
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CBDEDB
oklch(88.6% 0.021 185.4)
-
Step 300
300
#A7C9C4
oklch(81% 0.037 185.6)
-
Step 400
400
#77ADA6
oklch(70.8% 0.058 185.9)
-
Step 500
500
#509890
oklch(63.1% 0.074 186.1)
-
Step 600
600 (this color)
#378981
oklch(57.8% 0.08 186.4)
-
Step 700
700
#216E67
oklch(49% 0.074 186.4)
-
Step 800
800
#1E5A54
oklch(42.7% 0.062 185.9)
-
Step 900
900
#1F4A46
oklch(37.7% 0.048 187.2)
-
Step 950
950
#132B29
oklch(26.9% 0.03 188.5)
#378981 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) | #828281 | 0.085 |
| Deuteranopia (no green cones) | #757882 | 0.081 |
| Tritanopia (no blue cones) | #008C86 | 0.020 |
| Achromatopsia (no color) | #7C7C7C | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378981
#378981
oklch(57.8% 0.08 186.4)
- #A26572
#A26572
oklch(57.7% 0.08 6)
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 #378981, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.022
- Dusty Teal #4C9085 ΔE 0.029
- Teal Green #0A9396 ΔE 0.037
- Teal #008080 ΔE 0.039
- Sea #3C9992 ΔE 0.049
- Teal Blue #01889F ΔE 0.050
- Blue Green #0F9B8E ΔE 0.051
- Slate Green #658D6D ΔE 0.054
Use #378981 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.