#375755
Closest named color: Dark Slate Gray (#2F4F4F). oklch(43.1% 0.038 190.9), rgb(55, 87, 85).
Aa
White text reads best on this color (7.90:1).
About this color
#375755 is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.038 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.029 away. White text reads best on it, at 7.90:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.65:1 |
| White text | 7.90:1 |
Values
| HEX | #375755 |
| RGB | rgb(55, 87, 85) |
| HSL | hsl(176, 23%, 28%) |
| OKLCH | oklch(43.1% 0.038 190.9) |
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 #375755 | 7.90:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #375755 | 2.65:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #375755 text on white | 7.90:1 | AAA | Lc 87.4 | Fine for body text |
| #375755 text on black | 2.65:1 | Fails | Lc -14.8 | Not readable |
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 800.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#D0DCDB
oklch(88.5% 0.013 190.9)
-
Step 300
300
#B1C5C4
oklch(80.8% 0.022 193.1)
-
Step 400
400
#88A8A6
oklch(70.7% 0.035 191.7)
-
Step 500
500
#6A9390
oklch(63.2% 0.045 190.4)
-
Step 600
600
#507D7A
oklch(55.6% 0.05 190.5)
-
Step 700
700
#416967
oklch(49.1% 0.045 191.8)
-
Step 800
800 (this color)
#375755
oklch(43.1% 0.038 190.9)
-
Step 900
900
#2F4745
oklch(37.8% 0.03 189.4)
-
Step 950
950
#1C2929
oklch(26.9% 0.018 196.1)
#375755 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) | #535455 | 0.039 |
| Deuteranopia (no green cones) | #4E4F55 | 0.039 |
| Tritanopia (no blue cones) | #2B5956 | 0.013 |
| Achromatopsia (no color) | #515151 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375755
#375755
oklch(43.1% 0.038 190.9)
- #63484B
#63484B
oklch(43.2% 0.037 11.3)
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 #375755, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.029
- Deep Teal #00555A ΔE 0.040
- Dark Green Blue #1F6357 ΔE 0.041
- Petrol #005F6A ΔE 0.044
- Dark Blue Green #005249 ΔE 0.050
- Dark Teal #014D4E ΔE 0.057
- YInMn Blue #415A77 ΔE 0.058
- Dark Aqua #05696B ΔE 0.059
Use #375755 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.