#2A5752
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.3% 0.051 186.1), rgb(42, 87, 82).
Aa
White text reads best on this color (8.12:1).
About this color
#2A5752 is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.051 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.025 away. White text reads best on it, at 8.12:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.58:1 |
| White text | 8.12:1 |
Values
| HEX | #2A5752 |
| RGB | rgb(42, 87, 82) |
| HSL | hsl(173, 35%, 25%) |
| OKLCH | oklch(42.3% 0.051 186.1) |
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 #2A5752 | 8.12:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #2A5752 | 2.58:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #2A5752 text on white | 8.12:1 | AAA | Lc 88.0 | Fine for body text |
| #2A5752 text on black | 2.58:1 | Fails | Lc -14.2 | 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
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CEDDDB
oklch(88.6% 0.016 187.3)
-
Step 300
300
#ACC7C3
oklch(80.8% 0.03 185.8)
-
Step 400
400
#7FABA5
oklch(70.8% 0.048 185.8)
-
Step 500
500
#5D968F
oklch(63.2% 0.061 185.9)
-
Step 600
600
#428079
oklch(55.6% 0.065 186)
-
Step 700
700
#336C66
oklch(49.1% 0.061 186.4)
-
Step 800
800 (this color)
#2A5752
oklch(42.3% 0.051 186.1)
-
Step 900
900
#284945
oklch(37.9% 0.04 185.8)
-
Step 950
950
#182A28
oklch(26.9% 0.024 187)
#2A5752 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) | #535352 | 0.054 |
| Deuteranopia (no green cones) | #4B4D53 | 0.051 |
| Tritanopia (no blue cones) | #135955 | 0.016 |
| Achromatopsia (no color) | #4F4F4F | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A5752
#2A5752
oklch(42.3% 0.051 186.1)
- #66424A
#66424A
oklch(42.3% 0.051 4.9)
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 #2A5752, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.025
- Deep Teal #00555A ΔE 0.029
- Dark Blue Green #005249 ΔE 0.036
- Dark Green Blue #1F6357 ΔE 0.037
- Petrol #005F6A ΔE 0.041
- Dark Teal #014D4E ΔE 0.045
- Pine #2B5D34 ΔE 0.057
- Charcoal #264653 ΔE 0.058
Use #2A5752 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.