#3D575F
Closest named color: Dark Slate Gray (#2F4F4F). oklch(43.9% 0.034 218.9), rgb(61, 87, 95).
Aa
White text reads best on this color (7.70:1).
About this color
#3D575F is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.034 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.039 away. White text reads best on it, at 7.70:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.72:1 |
| White text | 7.70:1 |
Values
| HEX | #3D575F |
| RGB | rgb(61, 87, 95) |
| HSL | hsl(194, 22%, 31%) |
| OKLCH | oklch(43.9% 0.034 218.9) |
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 #3D575F | 7.70:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #3D575F | 2.72:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #3D575F text on white | 7.70:1 | AAA | Lc 86.7 | Fine for body text |
| #3D575F text on black | 2.72:1 | Fails | Lc -15.4 | Dividers and decoration only |
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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D2DBDE
oklch(88.5% 0.011 219.6)
-
Step 300
300
#B3C4C9
oklch(80.9% 0.02 217.3)
-
Step 400
400
#8BA6AE
oklch(70.7% 0.032 217.6)
-
Step 500
500
#6E909A
oklch(63.1% 0.041 217.7)
-
Step 600
600
#567A85
oklch(55.6% 0.044 218.8)
-
Step 700
700
#466771
oklch(49.2% 0.041 218.7)
-
Step 800
800 (this color)
#3D575F
oklch(43.9% 0.034 218.9)
-
Step 900
900
#32454B
oklch(37.7% 0.026 219.2)
-
Step 950
950
#1D292C
oklch(27.1% 0.017 214.8)
#3D575F 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) | #52555F | 0.030 |
| Deuteranopia (no green cones) | #4C515F | 0.027 |
| Tritanopia (no blue cones) | #315A59 | 0.021 |
| Achromatopsia (no color) | #535353 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D575F
#3D575F
oklch(43.9% 0.034 218.9)
- #634C45
#634C45
oklch(43.9% 0.033 37.6)
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 #3D575F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.039
- YInMn Blue #415A77 ΔE 0.040
- Petrol #005F6A ΔE 0.044
- Deep Teal #00555A ΔE 0.049
- Dark Green Blue #1F6357 ΔE 0.051
- Dusty Grape #545775 ΔE 0.052
- Slate #516572 ΔE 0.057
- Dark Aqua #05696B ΔE 0.060
Use #3D575F 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.