#33524B
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.2% 0.039 178.4), rgb(51, 82, 75).
Aa
White text reads best on this color (8.57:1).
About this color
#33524B is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.039 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.015 away. White text reads best on it, at 8.57:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.44:1 |
| White text | 8.57:1 |
Values
| HEX | #33524B |
| RGB | rgb(51, 82, 75) |
| HSL | hsl(166, 23%, 26%) |
| OKLCH | oklch(41.2% 0.039 178.4) |
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 #33524B | 8.57:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #33524B | 2.44:1 | Fails | Lc 14.6 | Not readable |
| #33524B text on white | 8.57:1 | AAA | Lc 89.4 | Fine for body text |
| #33524B text on black | 2.44:1 | Fails | Lc -12.8 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5EBEA
oklch(93.5% 0.007 185.3)
-
Step 200
200
#D1DCD9
oklch(88.5% 0.013 178)
-
Step 300
300
#B2C6C1
oklch(81% 0.023 179)
-
Step 400
400
#89A8A1
oklch(70.6% 0.036 180)
-
Step 500
500
#6B938A
oklch(63.1% 0.046 179.3)
-
Step 600
600
#527D73
oklch(55.5% 0.05 178.1)
-
Step 700
700
#426A61
oklch(49.2% 0.048 178.4)
-
Step 800
800 (this color)
#33524B
oklch(41.2% 0.039 178.4)
-
Step 900
900
#304742
oklch(37.7% 0.03 179.6)
-
Step 950
950
#1C2A26
oklch(27.1% 0.02 175.1)
#33524B 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) | #504E4B | 0.042 |
| Deuteranopia (no green cones) | #4A4A4C | 0.040 |
| Tritanopia (no blue cones) | #295350 | 0.012 |
| Achromatopsia (no color) | #4C4C4C | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33524B
#33524B
oklch(41.2% 0.039 178.4)
- #5D424B
#5D424B
oklch(41.2% 0.04 357.2)
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 #33524B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.015
- Dark Blue Green #005249 ΔE 0.037
- Deep Teal #00555A ΔE 0.037
- Dark Teal #014D4E ΔE 0.043
- Charcoal #264653 ΔE 0.050
- Dark Green Blue #1F6357 ΔE 0.052
- Charcoal Grey #3C4142 ΔE 0.053
- Dark Grey Blue #29465B ΔE 0.057
Use #33524B 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.