#2A3733
Closest named color: Onyx (#343A40). oklch(32.4% 0.019 174.4), rgb(42, 55, 51).
Aa
White text reads best on this color (12.40:1).
About this color
#2A3733 is a dark close to neutral grey. In OKLCH its lightness is 32%, its chroma 0.019. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.029 away. White text reads best on it, at 12.40:1.
| Hue family | Neutrals |
| Lightness | dark (32%) |
| Chroma | close to neutral grey (0.019) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.69:1 |
| White text | 12.40:1 |
Values
| HEX | #2A3733 |
| RGB | rgb(42, 55, 51) |
| HSL | hsl(162, 13%, 19%) |
| OKLCH | oklch(32.4% 0.019 174.4) |
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 #2A3733 | 12.40:1 | AAA | Lc -101.7 | Preferred for body text |
| Black text on #2A3733 | 1.69:1 | Fails | Lc 0.0 | Not readable |
| #2A3733 text on white | 12.40:1 | AAA | Lc 98.2 | Preferred for body text |
| #2A3733 text on black | 1.69:1 | Fails | Lc 0.0 | 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 900.
-
Step 50
50
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E7EBE9
oklch(93.6% 0.005 165)
-
Step 200
200
#D4DBD9
oklch(88.5% 0.008 177.3)
-
Step 300
300
#B8C4C0
oklch(81% 0.014 174.1)
-
Step 400
400
#93A59F
oklch(70.6% 0.022 173.6)
-
Step 500
500
#788F88
oklch(63% 0.028 175)
-
Step 600
600
#617A72
oklch(55.7% 0.032 173.6)
-
Step 700
700
#50665F
oklch(49% 0.029 173.7)
-
Step 800
800
#42534E
oklch(42.6% 0.023 175.4)
-
Step 900
900 (this color)
#2A3733
oklch(32.4% 0.019 174.4)
-
Step 950
950
#212826
oklch(26.9% 0.011 176.4)
#2A3733 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) | #363533 | 0.020 |
| Deuteranopia (no green cones) | #343433 | 0.018 |
| Tritanopia (no blue cones) | #273736 | 0.006 |
| Achromatopsia (no color) | #343434 | 0.019 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A3733
#2A3733
oklch(32.4% 0.019 174.4)
- #3C3034
#3C3034
oklch(32.4% 0.019 356.2)
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 #2A3733, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.029
- Gunmetal #293241 ΔE 0.035
- Pakistan Green #283618 ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.045
- Charcoal Grey #3C4142 ΔE 0.049
- Midnight Green #073B4C ΔE 0.050
- Space Cadet #2B2D42 ΔE 0.050
- Charcoal #264653 ΔE 0.063
Use #2A3733 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.