#33565F
Closest named color: Dark Slate Gray (#2F4F4F). oklch(43% 0.043 215.9), rgb(51, 86, 95).
Aa
White text reads best on this color (7.96:1).
About this color
#33565F is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.043 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.031 away. White text reads best on it, at 7.96:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.63:1 |
| White text | 7.96:1 |
Values
| HEX | #33565F |
| RGB | rgb(51, 86, 95) |
| HSL | hsl(192, 30%, 29%) |
| OKLCH | oklch(43% 0.043 215.9) |
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 #33565F | 7.96:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #33565F | 2.63:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #33565F text on white | 7.96:1 | AAA | Lc 87.5 | Fine for body text |
| #33565F text on black | 2.63:1 | Fails | Lc -14.6 | 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
#E5EBED
oklch(93.6% 0.007 219.6)
-
Step 200
200
#CFDCDF
oklch(88.6% 0.015 213.1)
-
Step 300
300
#AFC5CB
oklch(80.9% 0.025 215.9)
-
Step 400
400
#85A7B1
oklch(70.6% 0.04 217.6)
-
Step 500
500
#65929D
oklch(63.1% 0.051 214.6)
-
Step 600
600
#4B7C88
oklch(55.6% 0.056 215.1)
-
Step 700
700
#3C6874
oklch(49% 0.052 217.2)
-
Step 800
800 (this color)
#33565F
oklch(43% 0.043 215.9)
-
Step 900
900
#2C464D
oklch(37.6% 0.034 216.5)
-
Step 950
950
#1A292D
oklch(26.9% 0.022 216.2)
#33565F 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) | #505460 | 0.039 |
| Deuteranopia (no green cones) | #494F5F | 0.035 |
| Tritanopia (no blue cones) | #1F5959 | 0.025 |
| Achromatopsia (no color) | #515151 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33565F
#33565F
oklch(43% 0.043 215.9)
- #654840
#654840
oklch(43.1% 0.042 36)
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 #33565F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.031
- Deep Teal #00555A ΔE 0.037
- Petrol #005F6A ΔE 0.037
- YInMn Blue #415A77 ΔE 0.045
- Dark Green Blue #1F6357 ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.054
- Charcoal #264653 ΔE 0.056
- Dark Blue Green #005249 ΔE 0.056
Use #33565F 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.