#375759
Closest named color: Dark Slate Gray (#2F4F4F). oklch(43.3% 0.038 200.9), rgb(55, 87, 89).
Aa
White text reads best on this color (7.86:1).
About this color
#375759 is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.038 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.030 away. White text reads best on it, at 7.86:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.66:1 |
| White text | 7.86:1 |
Values
| HEX | #375759 |
| RGB | rgb(55, 87, 89) |
| HSL | hsl(184, 24%, 28%) |
| OKLCH | oklch(43.3% 0.038 200.9) |
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 #375759 | 7.86:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #375759 | 2.66:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #375759 text on white | 7.86:1 | AAA | Lc 87.2 | Fine for body text |
| #375759 text on black | 2.66:1 | Fails | Lc -14.9 | 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
#D0DCDC
oklch(88.5% 0.013 196.9)
-
Step 300
300
#B1C5C6
oklch(80.9% 0.022 200.4)
-
Step 400
400
#88A8A9
oklch(70.8% 0.035 198.7)
-
Step 500
500
#699295
oklch(63.1% 0.045 201.8)
-
Step 600
600
#507C7F
oklch(55.6% 0.049 201.3)
-
Step 700
700
#40696B
oklch(49.1% 0.046 199.7)
-
Step 800
800 (this color)
#375759
oklch(43.3% 0.038 200.9)
-
Step 900
900
#2F4648
oklch(37.6% 0.029 202.8)
-
Step 950
950
#1C292A
oklch(26.9% 0.018 202.1)
#375759 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) | #535459 | 0.039 |
| Deuteranopia (no green cones) | #4D5059 | 0.036 |
| Tritanopia (no blue cones) | #2A5957 | 0.016 |
| Achromatopsia (no color) | #525252 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375759
#375759
oklch(43.3% 0.038 200.9)
- #644948
#644948
oklch(43.4% 0.037 21.1)
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 #375759, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.030
- Deep Teal #00555A ΔE 0.040
- Petrol #005F6A ΔE 0.041
- Dark Green Blue #1F6357 ΔE 0.043
- YInMn Blue #415A77 ΔE 0.052
- Dark Blue Green #005249 ΔE 0.054
- Dark Aqua #05696B ΔE 0.058
- Dark Teal #014D4E ΔE 0.058
Use #375759 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.