#33565A
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.8% 0.041 205), rgb(51, 86, 90).
Aa
White text reads best on this color (8.01:1).
About this color
#33565A is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.041 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.026 away. White text reads best on it, at 8.01:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.61:1 |
| White text | 8.01:1 |
Values
| HEX | #33565A |
| RGB | rgb(51, 86, 90) |
| HSL | hsl(186, 28%, 28%) |
| OKLCH | oklch(42.8% 0.041 205) |
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 #33565A | 8.01:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #33565A | 2.61:1 | Fails | Lc 16.3 | Dividers and decoration only |
| #33565A text on white | 8.01:1 | AAA | Lc 87.7 | Fine for body text |
| #33565A text on black | 2.61:1 | Fails | Lc -14.4 | 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
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D0DCDD
oklch(88.6% 0.013 202.9)
-
Step 300
300
#B0C5C8
oklch(80.8% 0.023 207.1)
-
Step 400
400
#85A8AC
oklch(70.7% 0.039 204.9)
-
Step 500
500
#669298
oklch(63% 0.049 206.6)
-
Step 600
600
#4C7D82
oklch(55.7% 0.054 204)
-
Step 700
700
#3D696E
oklch(49.1% 0.049 205)
-
Step 800
800 (this color)
#33565A
oklch(42.8% 0.041 205)
-
Step 900
900
#2D474A
oklch(37.8% 0.032 205)
-
Step 950
950
#1B292B
oklch(26.9% 0.019 207.1)
#33565A 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) | #51535A | 0.041 |
| Deuteranopia (no green cones) | #4A4E5A | 0.038 |
| Tritanopia (no blue cones) | #225957 | 0.020 |
| Achromatopsia (no color) | #505050 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33565A
#33565A
oklch(42.8% 0.041 205)
- #644744
#644744
oklch(42.9% 0.04 25.6)
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 #33565A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.026
- Deep Teal #00555A ΔE 0.035
- Petrol #005F6A ΔE 0.039
- Dark Green Blue #1F6357 ΔE 0.046
- Dark Blue Green #005249 ΔE 0.050
- YInMn Blue #415A77 ΔE 0.052
- Dark Teal #014D4E ΔE 0.053
- Charcoal #264653 ΔE 0.055
Use #33565A 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.