#33565C
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.9% 0.042 209.5), rgb(51, 86, 92).
Aa
White text reads best on this color (7.99:1).
About this color
#33565C is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.042 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.028 away. White text reads best on it, at 7.99:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.62:1 |
| White text | 7.99:1 |
Values
| HEX | #33565C |
| RGB | rgb(51, 86, 92) |
| HSL | hsl(189, 29%, 28%) |
| OKLCH | oklch(42.9% 0.042 209.5) |
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 #33565C | 7.99:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #33565C | 2.62:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #33565C text on white | 7.99:1 | AAA | Lc 87.6 | Fine for body text |
| #33565C text on black | 2.62:1 | Fails | Lc -14.5 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D0DCDE
oklch(88.6% 0.013 208.8)
-
Step 300
300
#AFC5C9
oklch(80.8% 0.025 209.8)
-
Step 400
400
#85A8AE
oklch(70.8% 0.039 209.1)
-
Step 500
500
#66929A
oklch(63.1% 0.049 210.1)
-
Step 600
600
#4C7C85
oklch(55.6% 0.054 210.7)
-
Step 700
700
#3D6970
oklch(49.2% 0.05 208.6)
-
Step 800
800 (this color)
#33565C
oklch(42.9% 0.042 209.5)
-
Step 900
900
#2D464B
oklch(37.6% 0.032 211.5)
-
Step 950
950
#1A292C
oklch(26.9% 0.021 211.4)
#33565C 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) | #50545C | 0.039 |
| Deuteranopia (no green cones) | #4A4E5C | 0.038 |
| Tritanopia (no blue cones) | #215958 | 0.021 |
| Achromatopsia (no color) | #515151 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33565C
#33565C
oklch(42.9% 0.042 209.5)
- #654742
#654742
oklch(42.9% 0.042 29.5)
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 #33565C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.028
- Deep Teal #00555A ΔE 0.035
- Petrol #005F6A ΔE 0.038
- Dark Green Blue #1F6357 ΔE 0.047
- YInMn Blue #415A77 ΔE 0.049
- Dark Blue Green #005249 ΔE 0.052
- Dark Teal #014D4E ΔE 0.054
- Dark Grey Blue #29465B ΔE 0.055
Use #33565C 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.